44 – Laser Machine Maintenance (27:38)

The Lightblade Learning Lab with Russ Sadler

The Lightblade Learning Lab is a series of videos that Russ did for Thinklaser Limited based on using the Lightblade 4060 Laser Cutting and Engraving Machine. Thinklasers Lightblade 4060 has a 400 x 600mm bed size and was supplied with a 60W EFR laser tube. In this session, Russ covers laser machine maintenance.

Laser machine maintenance Picture of dirty lens
Laser machine maintenance Picture of dirty lens

Contents for Laser Machine Maintenance

  • Introduction
  • Starting with the beam path.
  • The head assembly.
    • Disassembly
    • Checking the lens for dirt.
    • 2.5mm drill also useful for cleaning aperture.
    • Removing the lens by unscrewing the retaining screw with a special tool.
    • Holding the lens with a special tool (design can be found here)
    • Cleaning with provided cotton bud, lens tissues and Isopropyl Alcohol (aka IPA, also available as Servisol IPA 170, datasheet available here).
    • Re-assembling the lens tube (concave or flat side of the lens towards the ‘O’-ring and retaining screw).
    • Cleaning the nozzle with the provided Acetone (available in larger quantities, e.g. here) should not be used for cleaning the lens!
    • Checking the mirror and cleaning them with Acetone.
  • Cleaning No. 2 Mirror with Acetone.
  • Cleaning No 1. Mirror with Acetone.
  • Cleaning the laser tube’s ‘window’ with Isopropyl Alcohol (only!)
  • Cleaning the slideways by wiping them with a cloth and DM-90 (Molybdenum lubricant).
  • Vacuum cleaning the bed and inside the body of the machine.
  • Cleaning the pre-filter (if fitted).
  • Consider deleting unwanted files.
  • Summary.

My thanks go out to Tom at Thinklaser for giving permission to embed these videos on this site. If you are looking for a new laser machine from a quality supplier, then I would suggest you check out their website: www.thinklaser.com.

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www.rdworkslab.com

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Transcript for Laser Machine Maintenance

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[Music]

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Oh welcome to another light blade

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Learning Lab spring is in the air it’s

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time we had a bit of a clean-up on the

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machine do you know how difficult it is

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to tie a bow behind your back now let’s

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get serious for a minute if you can take

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me seriously dressed like this you’ve

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got to love your machine this machine

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now he needs a spring clean but it needs

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some regular maintenance and attendance

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if you serve it well it will serve you

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well so today what we got to do is go

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through a little bit of a maintenance

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routine oh goodness me now I’m giving

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you the impression that I only clean

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this machine once a year not true it

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requires constant attention in some

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areas now other places you can leave and

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just check it occasionally so today

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we’ll go through in no particular order

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of importance the sort of things you

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should be doing and maybe the frequency

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with which you should be taking a look

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at let’s start from the busy end of the

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machine chewy

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okay so drop the table out the way for

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the moment just recently I’ve been

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making out top-secret rubber stamp if

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you remember

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and that in itself produces dust because

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although the rubber or whatever the

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rubber binding material goes away

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evaporates it leaves a powdery fellow

Transcript for Laser Machine Maintenance (Cont…)

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material behind and as you can see it’s

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it’s left quite a lot of debris around

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on the outside of the nozzle now if it’s

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done that to the outside of the nozzle I

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wonder what it might have done to the

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inside of the nozzle so one of the first

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things we’ll do is we’ll start taking a

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look at what’s happening at the bottom

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end of the system here and to do that

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I’ve got to release the autofocus pen

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and we take the lens and nozzle assembly

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out and let’s have a look to see what’s

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inside it’s always hearth worth having

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looked down inside there from time to

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time despite the fact you might think

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there’s no chance of muck and debris

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getting down in there we’ve got a hole

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in the top here and hey have I got a

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cobweb or a spider in there hmm that’s

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interesting we’ll take a look at that in

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a minute

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because I only check that about a week

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ago this is something that I do and you

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should do very regularly take a look

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inside and oh my goodness me can you see

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that lens look at much frost enos there

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is on that lens now that is a really

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really bad sign if you run your machine

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with high power with that amount of

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debris on the lens

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there’s a possibility that you could do

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quite serious damage to your leg in the

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center there there is an area which is a

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different colour to that round the

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outside that’s the beginning of

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something pretty bad

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that is debris that is being burnt onto

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the face of the lens there now this lens

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is covered with an anti-reflection

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coating the infrared rays will actually

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hit that solid material and heat it up

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and so they’ll be heating up one face of

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the lens particularly the center part of

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the lens and that material will start to

Transcript for Laser Machine Maintenance (Cont…)

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get burnt onto the coating not only does

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it get burnt onto the coating but it

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also reduces the efficiency of the light

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being transmitted through the lens so I

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cannot explain to you how crucial it is

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to keep your lens clean I would hope

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that your machine was supplied to you

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with one of these standard think lace-up

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lens cleaning kits but if you didn’t get

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one of these kits then make sure at

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least you have some of these components

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that you can buy cheaply you can buy

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this material which is called isopropyl

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alcohol I happen to have bought it in a

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spray form like this it’s about six or

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seven pounds it’s not a fortune but it’s

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worth its weight in gold now you’ll also

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be supplied with something called

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acetone I buy acetone in one liter

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containers I use it for other purposes

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as well but the one thing you mustn’t

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use it for is your lens we should go

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back to this isopropyl alcohol and we

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will do some work on the lens now your

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lobby’s also be supplied with some

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rubber gloves I don’t know which is more

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dangerous you handling the lens and

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putting finger marks on the lens or the

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lens which is basically a toxic material

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underneath a coating which obviously

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makes it less toxic so whichever way you

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like to look at it the sensible thing to

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do is to wear some gloves that are

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provide now there are other some there

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are some other useful things in this kit

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which we will talk about later on but

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we’ve got the two essential things out

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at this moment

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in time which is the cotton ball bud and

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the isopropyl alcohol and there’s one

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further item that comes in the pack

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which is absolutely essential and that’s

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called a lens cleaning tissue now as

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part of your maintenance kit something

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else we recommend you have you can get

Transcript for Laser Machine Maintenance (Cont…)

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these from all sorts of places tour

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shops you’ll be able to buy them online

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from ebay or somewhere and that is a two

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and a half millimeter drill this hole in

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the end of the nozzle here there’s just

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as important as anything else I know

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it’s just a hole but it needs to be

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clean and it needs to be the right size

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now we will clean that nozzle up before

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we put it back on but at the moment I’m

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not going to do that what we’re going to

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do is to take a look at that lens now in

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your kit you’ll also find that you’ve

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got one of these which is a lens removal

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tool now you can I make a prudent

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suggestion before you do any work on

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lenses do it on a soft surface I’m

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putting some tissues down on there and

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there’s three or four layers of tissues

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because if you drop this lens onto a

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hard surface depending on what sort it

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is it can chip or shatter it might look

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like glass and it is a glassy material

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but it’s not mechanically very strong we

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shall need to unscrew the retaining cap

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[Music]

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now the lens has come out stuck to the

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retaining screw because the retaining

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screw itself has got an o-ring on it and

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the o-ring tends to stick the lens to it

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so there we go we’ve got the lens out

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now okay now this is manufactured

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slightly undersized here so that you can

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open it up and pick up your lens like

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that

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now you can clamp the lens and get to

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both sides of it without doing any

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damage to your hands because you’re not

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holding any toxic materials but the more

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important thing is you’re gripping this

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lens tightly around the outside so you

Transcript for Laser Machine Maintenance (Cont…)

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don’t have to put it on your hand or

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anything to do the cleaning process now

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do not use anything other than this

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isopropyl alcohol for cleaning your lens

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and just do small circular motions away

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from the center

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and then when you let it dry and you can

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blow on it and you’ll see that as he

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blow on it

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it leaves a nasty little film behind

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well let’s not worry about that film for

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a moment we’ll do the other side now

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this is the side where we potentially

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are in the process of burning on some

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debris now as you can see as I hold that

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up to the light I have given it just a

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quick wipe over but that quick wipe over

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has not removed the debris off the

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center so we’re going to need to do it

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gently

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I’ve just left it for a few minutes the

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alice’ propyl alcohol and if you look

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you’ll see that it has started to soften

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the material that’s in the center there

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and again with a few careful motions

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circular motions

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we should be able to and just there look

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there are a couple of can you see the

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debris that’s on there look

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[Music]

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then there are a couple of spots there

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which are really quite hard to take off

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I’m not really scrubbing it

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I’m just making circular motions gently

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and that’s why I’ve got this long stick

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so that I just can’t press too hard on

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it this is where we need our cleaning

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tissue because we now have to very

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carefully clean the surface to remove

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the film no do the same to the top side

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as well

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now to put the lens back in here’s what

Transcript for Laser Machine Maintenance (Cont…)

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I recommend you do

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there’s the screw fitting there with its

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with its tightening notches put the

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o-ring on top and with the flat side or

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the flatter looking side because if you

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if you want to check whether or not

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you’ve got a meniscus lens fitted to

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your machine the best thing to do is to

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put it up a kick against a line of text

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like this and try and read the text

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backwards if the text is distorted and

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it’s not in a straight line across the

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middle of your lens it means you’ve got

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a concave surface on the bottom for your

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lens and that is something called a

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meniscus lens but whether it’s concave

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or flat you need to put that side face

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down to the o-ring so we’re drop that

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back on to the o-ring now make sure

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first of all as we said it’s clean down

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the inside there and if you look in

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there you can see oh look I’ve got some

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cobwebs or some debris or something

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inside there which I need to remove

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don’t attempt to put this in drop the

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lens in there put the tube on top of the

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lens

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then you can then pick it up as I’ve

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done here with my finger try and keep it

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upside down as well like this because

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you’ve got a rubber glove on you’ll find

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it very easy to sit the freedom on your

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rubber glove and screw it in that will

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00:11:25.089 –> 00:11:29.829
make sure that the lens sits flat all

241
00:11:27.129 –> 00:11:32.169
the time that it’s going in carry on

242
00:11:29.829 –> 00:11:36.429
doing it until it just begins to get a

243
00:11:32.169 –> 00:11:38.919
bit stiff your lens is now more or less

244
00:11:36.429 –> 00:11:41.019
whole so all you then need to do is just

245
00:11:38.919 –> 00:11:43.709
apply a very small amount of twist and

246
00:11:41.019 –> 00:11:45.790
you can feel the o-ring starting to bite

247
00:11:43.709 –> 00:11:49.449
and as soon as you get some resistance

248
00:11:45.79 –> 00:11:51.489
stop just make sure the lens doesn’t

249
00:11:49.449 –> 00:11:53.470
rattle so you’ll know that the lens is

250
00:11:51.489 –> 00:11:55.839
nice and tight in its seating now we

251
00:11:53.47 –> 00:11:59.439
don’t need this isopropyl alcohol at the

252
00:11:55.839 –> 00:12:00.870
moment so we’ll put the lid on because

Transcript for Laser Machine Maintenance (Cont…)

253
00:11:59.439 –> 00:12:04.480
it does evaporate

254
00:12:00.87 –> 00:12:04.480
[Music]

255
00:12:05.02 –> 00:12:09.520
we don’t have anymore lenses to play

256
00:12:06.97 –> 00:12:10.830
with so we can now put this back in the

257
00:12:09.52 –> 00:12:14.050
toolkit

258
00:12:10.83 –> 00:12:16.090
this has got some debris on it we don’t

259
00:12:14.05 –> 00:12:16.540
need that anymore so we’ll throw that

260
00:12:16.09 –> 00:12:19.170
away

261
00:12:16.54 –> 00:12:21.610
and look at the state of that nozzle

262
00:12:19.17 –> 00:12:24.130
there could be all sorts of debris on

263
00:12:21.61 –> 00:12:27.460
there and so this is where we need

264
00:12:24.13 –> 00:12:29.170
something fairly aggressive and acetone

265
00:12:27.46 –> 00:12:31.630
is nicely aggressive it’s far too

266
00:12:29.17 –> 00:12:33.340
aggressive for lenses because it might

267
00:12:31.63 –> 00:12:35.680
damage the coating the anti reflection

268
00:12:33.34 –> 00:12:36.910
coating that’s on the lens but when it

269
00:12:35.68 –> 00:12:40.510
comes to something like this

270
00:12:36.91 –> 00:12:43.120
look hey it does a great job of cleaning

271
00:12:40.51 –> 00:12:45.010
up your nozzle now those of you of a

272
00:12:43.12 –> 00:12:47.950
sensitive disposition please look away

273
00:12:45.01 –> 00:12:50.320
because some people can’t can’t stand

274
00:12:47.95 –> 00:12:52.480
this scratching especially with a

275
00:12:50.32 –> 00:12:54.370
fingernail I’ve let this nozzle get into

276
00:12:52.48 –> 00:12:55.660
a little bit of a state and I suppose I

277
00:12:54.37 –> 00:12:57.880
should have done this a little bit more

278
00:12:55.66 –> 00:12:59.740
often because it’s outside the Machine

279
00:12:57.88 –> 00:13:01.930
and it doesn’t really affect the

280
00:12:59.74 –> 00:13:04.870
performance of the machine it’s just one

281
00:13:01.93 –> 00:13:07.330
of those love and care things before you

282
00:13:04.87 –> 00:13:09.970
destroy this lovely that will cut more

283
00:13:07.33 –> 00:13:11.710
bugs you can use some acetone and clean

284
00:13:09.97 –> 00:13:13.990
down the inside of the nozzle does work

285
00:13:11.71 –> 00:13:16.240
because I’ll guarantee that when we take

286
00:13:13.99 –> 00:13:17.380
this cotton wool butt out of here you

287
00:13:16.24 –> 00:13:20.630
will be horrified

288
00:13:17.38 –> 00:13:20.630
[Music]

289
00:13:22.37 –> 00:13:28.480
that it’s absolutely minging and

290
00:13:31.7 –> 00:13:37.310
yeah we’ve pushed all sort of debris

291
00:13:34.67 –> 00:13:39.440
down to the bottom there and with a bit

292
00:13:37.31 –> 00:13:45.340
of luck maybe the other end of that

293
00:13:39.44 –> 00:13:47.540
stick will pass nicely through our

294
00:13:45.34 –> 00:13:48.680
nozzle hole just clean it down the

295
00:13:47.54 –> 00:13:52.490
inside there with a little bit of tissue

296
00:13:48.68 –> 00:13:56.030
as well so we’ve now sorted the business

297
00:13:52.49 –> 00:13:58.580
end of the machine now before I put that

298
00:13:56.03 –> 00:14:00.760
back now there are a couple of other

Transcript for Laser Machine Maintenance (Cont…)

299
00:13:58.58 –> 00:14:06.140
things that are supplied in your kit

300
00:14:00.76 –> 00:14:08.810
we’ve got a torch and we’ve got an

301
00:14:06.14 –> 00:14:11.950
inspection mirror we can shine the torch

302
00:14:08.81 –> 00:14:15.020
upwards just stand on the deck like that

303
00:14:11.95 –> 00:14:17.450
and we can take a look in here at the

304
00:14:15.02 –> 00:14:21.080
mirror now look you can see that that

305
00:14:17.45 –> 00:14:23.240
mirror in there is not looking crisp and

306
00:14:21.08 –> 00:14:25.070
clean it’s looking a little bit on the

307
00:14:23.24 –> 00:14:28.280
hazy side we will use some acetone

308
00:14:25.07 –> 00:14:31.190
because these mirrors in here are made

309
00:14:28.28 –> 00:14:35.120
of metal called molybdenum they are

310
00:14:31.19 –> 00:14:36.950
basically almost bulletproof you can you

311
00:14:35.12 –> 00:14:40.790
will find it very difficult to scratch

312
00:14:36.95 –> 00:14:41.180
them but still treat them like a baby’s

313
00:14:40.79 –> 00:14:44.840
bottom

314
00:14:41.18 –> 00:14:48.290
very gently please we might be using

315
00:14:44.84 –> 00:14:50.170
quite an aggressive solvent on this but

316
00:14:48.29 –> 00:14:52.840
even so

317
00:14:50.17 –> 00:14:55.960
[Music]

318
00:14:52.84 –> 00:14:57.660
don’t go mad there’s the film that’s

319
00:14:55.96 –> 00:15:00.040
come off of the face of the mirror

320
00:14:57.66 –> 00:15:02.860
acetone will leave a film on the mirror

321
00:15:00.04 –> 00:15:06.370
again with your lens tissue just try and

322
00:15:02.86 –> 00:15:08.230
give it a gentle clean all over well I

323
00:15:06.37 –> 00:15:11.310
think you can now begin to see the torch

324
00:15:08.23 –> 00:15:15.070
itself the bright light of the torch so

325
00:15:11.31 –> 00:15:17.350
there is no longer cloudy that mirror if

326
00:15:15.07 –> 00:15:19.870
you’ve got any doubt at all you’ll have

327
00:15:17.35 –> 00:15:22.060
to take that mirror out and give it a

328
00:15:19.87 –> 00:15:24.250
thorough clean but I’m happy that that

329
00:15:22.06 –> 00:15:25.720
mirror is in pretty good condition now

330
00:15:24.25 –> 00:15:28.870
that’s the most difficult mirror to

331
00:15:25.72 –> 00:15:32.680
access all the other mirrors now I got

332
00:15:28.87 –> 00:15:34.240
to be pretty easy to do and there’s our

333
00:15:32.68 –> 00:15:37.720
number two mirror and as you can see

334
00:15:34.24 –> 00:15:39.220
it’s not in tip-top condition I haven’t

335
00:15:37.72 –> 00:15:41.650
really been looking after that Hawaii

336
00:15:39.22 –> 00:15:44.470
one of the things to note is that if the

337
00:15:41.65 –> 00:15:47.170
mirror is dirty you will get debris

338
00:15:44.47 –> 00:15:49.330
burnt onto the surface this is only just

339
00:15:47.17 –> 00:15:51.550
a very gentle haze on here so it’s not

340
00:15:49.33 –> 00:15:54.580
really a major problem a little bit of

341
00:15:51.55 –> 00:15:57.530
acetone on that mirror

342
00:15:54.58 –> 00:16:00.140
[Music]

Transcript for Laser Machine Maintenance (Cont…)

343
00:15:57.53 –> 00:16:01.450
we’ll fix it I haven’t got to go too

344
00:16:00.14 –> 00:16:03.830
hard

345
00:16:01.45 –> 00:16:06.590
I’ll give it a final polish with some

346
00:16:03.83 –> 00:16:08.300
lens to you and there we go I think

347
00:16:06.59 –> 00:16:10.250
we’ve got a fairly clean mirror there

348
00:16:08.3 –> 00:16:11.810
now and here we are at the back of the

349
00:16:10.25 –> 00:16:13.990
machine I’m going to clean mirror number

350
00:16:11.81 –> 00:16:13.990
one

351
00:16:22.06 –> 00:16:29.170
now after mirror number one there’s one

352
00:16:26.05 –> 00:16:30.700
more important thing that we must do and

353
00:16:29.17 –> 00:16:32.170
it’s probably one of the main reasons

354
00:16:30.7 –> 00:16:34.210
why you’ve been given this inspection

355
00:16:32.17 –> 00:16:37.390
mirror because it’s difficult to see and

356
00:16:34.21 –> 00:16:39.010
because it’s difficult to see it’s

357
00:16:37.39 –> 00:16:42.180
probably something that you might well

358
00:16:39.01 –> 00:16:44.320
easily forget now here’s our laser tube

359
00:16:42.18 –> 00:16:48.370
just in the back of this brass piece

360
00:16:44.32 –> 00:16:51.400
here that’s a plain piece of zinc

361
00:16:48.37 –> 00:16:54.100
selenide which is partially mirrored on

362
00:16:51.4 –> 00:16:57.010
one side that lets the laser light out

363
00:16:54.1 –> 00:16:59.110
of your machine so that’s just as

364
00:16:57.01 –> 00:17:01.660
important as any one of your lenses if

365
00:16:59.11 –> 00:17:05.829
you get material burn onto the face of

366
00:17:01.66 –> 00:17:08.350
that window let’s call it then that damn

367
00:17:05.829 –> 00:17:11.260
that debris will heat up and it will

368
00:17:08.35 –> 00:17:13.350
crack that window now I’ve actually seen

369
00:17:11.26 –> 00:17:15.970
this happen where somebody has actually

370
00:17:13.35 –> 00:17:19.569
managed to produce smoke in this area

371
00:17:15.97 –> 00:17:23.010
and they have managed to occlude that

372
00:17:19.569 –> 00:17:25.959
lens if you let it get like this picture

373
00:17:23.01 –> 00:17:28.840
check the cracks out behind the debris

374
00:17:25.959 –> 00:17:30.610
you’ve basically cost yourself a lot of

375
00:17:28.84 –> 00:17:34.630
money

376
00:17:30.61 –> 00:17:37.120
it’s a new tube now only ever use

377
00:17:34.63 –> 00:17:40.299
isopropyl alcohol on this particular

378
00:17:37.12 –> 00:17:42.700
window it’s quite difficult for me to

379
00:17:40.299 –> 00:17:45.100
get you a good picture to look in there

380
00:17:42.7 –> 00:17:48.309
but let’s just see if we can do it there

381
00:17:45.1 –> 00:17:51.669
is just the merest haze on the front

382
00:17:48.309 –> 00:17:53.860
face just the merest haze which wouldn’t

383
00:17:51.669 –> 00:17:55.690
normally worry me but what I’m going to

384
00:17:53.86 –> 00:17:59.919
do in this particular instance is just

Transcript for Laser Machine Maintenance (Cont…)

385
00:17:55.69 –> 00:18:01.630
remove it better safe than sorry it’s

386
00:17:59.919 –> 00:18:03.580
going to be difficult to get to and you

387
00:18:01.63 –> 00:18:07.120
might well have to break one of your

388
00:18:03.58 –> 00:18:10.120
cotton ball buds down so that you can

389
00:18:07.12 –> 00:18:11.940
get to it be very very gentle with your

390
00:18:10.12 –> 00:18:14.440
actions

391
00:18:11.94 –> 00:18:16.419
so as we can see there’s a little hint

392
00:18:14.44 –> 00:18:19.440
of yellow on the tip of that buddy

393
00:18:16.419 –> 00:18:22.090
so we’ll just poke some tissue in there

394
00:18:19.44 –> 00:18:26.320
we’ll put the cotton wool budding behind

395
00:18:22.09 –> 00:18:29.230
it so now we’ve got a lovely clean exit

396
00:18:26.32 –> 00:18:30.789
window on the tube itself okay so we’ve

397
00:18:29.23 –> 00:18:33.639
done one of the major maintenance jobs

398
00:18:30.789 –> 00:18:35.139
which is the beam path and that’s

399
00:18:33.639 –> 00:18:38.019
something you should check as I said

400
00:18:35.139 –> 00:18:39.760
fairly regularly the mirrors are not

401
00:18:38.019 –> 00:18:44.169
quite so bad you can check those

402
00:18:39.76 –> 00:18:46.210
visually every week or so the lens is

403
00:18:44.169 –> 00:18:48.880
very important because you should check

404
00:18:46.21 –> 00:18:50.470
that probably every day almost or every

405
00:18:48.88 –> 00:18:51.909
time before you use the machine

406
00:18:50.47 –> 00:18:53.980
depending on how much you use the

407
00:18:51.909 –> 00:18:55.840
Machine of course but it’s worthwhile

408
00:18:53.98 –> 00:18:58.000
just dropping the lens out and having a

409
00:18:55.84 –> 00:19:00.279
quick look at it the window on the laser

410
00:18:58.0 –> 00:19:01.809
tube the chances are that you only need

411
00:19:00.279 –> 00:19:04.179
to keep an eye on that with a casual

412
00:19:01.809 –> 00:19:07.240
inspection maybe once a month once every

413
00:19:04.179 –> 00:19:09.399
two months after the beam part what’s

414
00:19:07.24 –> 00:19:11.740
the next most important thing well

415
00:19:09.399 –> 00:19:13.360
people say to me what about the slide

416
00:19:11.74 –> 00:19:15.130
weighs what should I do for the slide

417
00:19:13.36 –> 00:19:17.049
words how can I see how can I protect

418
00:19:15.13 –> 00:19:20.049
them and grease them and oil them well

419
00:19:17.049 –> 00:19:22.500
to be honest they’re almost the best

420
00:19:20.049 –> 00:19:26.970
things you can do with those is nothing

421
00:19:22.5 –> 00:19:30.190
now inside these bearings here we’ve got

422
00:19:26.97 –> 00:19:32.429
not only lithium grease which is

423
00:19:30.19 –> 00:19:36.899
basically on the recirculating ball

424
00:19:32.429 –> 00:19:36.899
track that’s inside here

425
00:19:37.17 –> 00:19:43.980
they’ve also got a flexible front here

426
00:19:40.44 –> 00:19:45.780
this red front along with something else

427
00:19:43.98 –> 00:19:48.180
that’s in there and even more flexible

428
00:19:45.78 –> 00:19:50.370
part which is basically a wiper blade

429
00:19:48.18 –> 00:19:52.500
that keeps these surfaces are

430
00:19:50.37 –> 00:19:55.710
particularly the surface here where the

431
00:19:52.5 –> 00:19:58.410
bearings run keeps those clean and wiped

432
00:19:55.71 –> 00:20:01.640
and if we take a look at the end of my

Transcript for Laser Machine Maintenance (Cont…)

433
00:19:58.41 –> 00:20:03.930
slide way here you’ll see what I mean

434
00:20:01.64 –> 00:20:06.210
can you see how the grease and debris

435
00:20:03.93 –> 00:20:09.570
has collected just here here and here

436
00:20:06.21 –> 00:20:14.100
where I’ve driven the head along I would

437
00:20:09.57 –> 00:20:17.190
fairly regularly go along them and give

438
00:20:14.1 –> 00:20:20.960
them a nice wipe make sure you keep all

439
00:20:17.19 –> 00:20:28.200
the dirt and debris away from the rails

440
00:20:20.96 –> 00:20:29.940
now this is a personal opinion but it’s

441
00:20:28.2 –> 00:20:34.080
what I’ve been doing on my machines for

442
00:20:29.94 –> 00:20:38.840
the last two and a half years and I

443
00:20:34.08 –> 00:20:42.000
haven’t seen any signs of wear at all so

444
00:20:38.84 –> 00:20:45.900
that’s my advice

445
00:20:42.0 –> 00:20:47.730
it is possible to get grease into these

446
00:20:45.9 –> 00:20:51.660
bearings but these bearings are supposed

447
00:20:47.73 –> 00:20:54.060
to be packed with grease for life so the

448
00:20:51.66 –> 00:20:58.220
great thing about a system like this it

449
00:20:54.06 –> 00:20:58.220
has been well engineered

450
00:20:58.559 –> 00:21:05.070
although I’ve just said to you don’t put

451
00:21:01.86 –> 00:21:10.259
anything on the rails I’m lying slightly

452
00:21:05.07 –> 00:21:15.419
because I do use this now this is a dry

453
00:21:10.259 –> 00:21:18.090
film molybdenum lubricant and I don’t

454
00:21:15.419 –> 00:21:22.919
spray it on the rails but what I do I

455
00:21:18.09 –> 00:21:27.440
spray it onto a tissue and I wipe it

456
00:21:22.919 –> 00:21:30.659
along the rails that way I’ve got a dry

457
00:21:27.44 –> 00:21:33.340
protective film that doesn’t attract

458
00:21:30.659 –> 00:21:36.390
dust and dirt

459
00:21:33.34 –> 00:21:38.910
[Music]

460
00:21:36.39 –> 00:21:44.070
and the molybdenum disulphide is

461
00:21:38.91 –> 00:21:46.290
basically a dry dry lubricant so it’s

462
00:21:44.07 –> 00:21:49.320
not doing any harm and it’s giving my

463
00:21:46.29 –> 00:21:50.970
rails a certain amount of protection now

464
00:21:49.32 –> 00:21:52.500
the ax ax is a little bit more difficult

465
00:21:50.97 –> 00:21:57.030
to get to because you can’t get to it

466
00:21:52.5 –> 00:22:01.450
easily all the way but just do the best

Transcript for Laser Machine Maintenance (Cont…)

467
00:21:57.03 –> 00:22:07.329
you can along the front and the back

468
00:22:01.45 –> 00:22:07.329
[Music]

469
00:22:08.88 –> 00:22:15.180
so that’s all I would recommend you do

470
00:22:11.16 –> 00:22:16.370
to your rails now you know how much I’m

471
00:22:15.18 –> 00:22:20.940
in love with this thing

472
00:22:16.37 –> 00:22:24.150
not very now forget the obvious things

473
00:22:20.94 –> 00:22:27.480
keep the face clean I’ve been doing a

474
00:22:24.15 –> 00:22:30.720
lot of work with powdery stuff things

475
00:22:27.48 –> 00:22:32.970
like granite slate the rubber which has

476
00:22:30.72 –> 00:22:35.040
got some compound in it oh yes we did

477
00:22:32.97 –> 00:22:37.290
Korean as well and look it doesn’t take

478
00:22:35.04 –> 00:22:38.390
much for all this debris to build up in

479
00:22:37.29 –> 00:22:41.979
the machine

480
00:22:38.39 –> 00:22:41.979
[Music]

481
00:22:44.71 –> 00:22:50.370
get somewhere don’t look growing often

482
00:22:47.26 –> 00:22:50.370
check out the big pieces

483
00:22:50.6 –> 00:22:57.769
[Music]

484
00:22:53.649 –> 00:23:03.259
now if you did follow my advice and make

485
00:22:57.769 –> 00:23:05.839
a a pre-filter pre-filter then we need

486
00:23:03.259 –> 00:23:08.059
to make sure that we keep this clean as

487
00:23:05.839 –> 00:23:10.789
well and this is a something you just

488
00:23:08.059 –> 00:23:13.249
could just open this front door and you

489
00:23:10.789 –> 00:23:16.519
can check this very easily once every

490
00:23:13.249 –> 00:23:18.679
week two weeks just to see whether it is

491
00:23:16.519 –> 00:23:21.619
clogging up because I’ve been doing the

492
00:23:18.679 –> 00:23:23.889
rubber and the granite engraving

493
00:23:21.619 –> 00:23:27.229
particularly the rubbery gravy the

494
00:23:23.889 –> 00:23:29.929
powdery stuff has collected on the front

495
00:23:27.229 –> 00:23:33.109
here this would normally be brown if I

496
00:23:29.929 –> 00:23:35.359
was doing wood cutting or MDF cutting or

497
00:23:33.109 –> 00:23:38.570
something like that so we’re gonna take

498
00:23:35.359 –> 00:23:44.209
this out and all we do is just literally

499
00:23:38.57 –> 00:23:46.190
this it comes out look how much stuff is

500
00:23:44.209 –> 00:23:48.469
collected on the surface there can you

501
00:23:46.19 –> 00:23:51.559
see that now that would have all gone

502
00:23:48.469 –> 00:23:55.219
and started choking up the primary

503
00:23:51.559 –> 00:23:57.499
filter in the Purex unit now the primary

504
00:23:55.219 –> 00:24:00.589
filter in the Purex unit is an expensive

Transcript for Laser Machine Maintenance (Cont…)

505
00:23:57.499 –> 00:24:04.940
item to replace what we’re going to do

506
00:24:00.589 –> 00:24:08.809
now is for less than a pound so when I

507
00:24:04.94 –> 00:24:10.940
just undo the four screws and we take

508
00:24:08.809 –> 00:24:14.210
this element off

509
00:24:10.94 –> 00:24:17.570
and there we go we can see how much

510
00:24:14.21 –> 00:24:18.860
debris has collected on this filter

511
00:24:17.57 –> 00:24:21.470
element look at it

512
00:24:18.86 –> 00:24:23.309
[Music]

513
00:24:21.47 –> 00:24:24.989
[Laughter]

514
00:24:23.309 –> 00:24:28.469
and look I brought all this for about

515
00:24:24.989 –> 00:24:31.349
three or four pounds now we don’t have

516
00:24:28.469 –> 00:24:32.669
to be too special about this that’s all

517
00:24:31.349 –> 00:24:35.639
we’re going to do is to make it that

518
00:24:32.669 –> 00:24:38.549
size just quick drop the corners off

519
00:24:35.639 –> 00:24:41.279
where thee where the screws are going to

520
00:24:38.549 –> 00:24:44.909
go it does not have to be an artwork

521
00:24:41.279 –> 00:24:46.310
because nobody is going to see it it’s

522
00:24:44.909 –> 00:24:49.380
going to save you pounds

523
00:24:46.31 –> 00:24:50.970
[Music]

524
00:24:49.38 –> 00:24:56.040
but there we go it’s all clamped around

525
00:24:50.97 –> 00:24:57.680
the outside now let me just pop it back

526
00:24:56.04 –> 00:25:04.580
into place

527
00:24:57.68 –> 00:25:04.580
[Music]

528
00:25:05.98 –> 00:25:09.799
what have we got to do on here this is

529
00:25:08.179 –> 00:25:11.450
nothing to do with maintenance well

530
00:25:09.799 –> 00:25:13.610
you’re absolutely right we don’t have to

531
00:25:11.45 –> 00:25:15.860
touch this keypad but what I would

532
00:25:13.61 –> 00:25:19.130
suggest you do is that from time to time

533
00:25:15.86 –> 00:25:20.809
you press the file button and take a

534
00:25:19.13 –> 00:25:22.490
look at how many files you’ve got in

535
00:25:20.809 –> 00:25:25.220
your filing system you’ll see that it

536
00:25:22.49 –> 00:25:28.370
says one at the top there click up to

537
00:25:25.22 –> 00:25:29.899
the top go backwards and see how many

538
00:25:28.37 –> 00:25:35.269
files you’ve got in there at the moment

539
00:25:29.899 –> 00:25:37.039
I’ve got 25 I used to have 99 manage

540
00:25:35.269 –> 00:25:40.820
your filing system on the machine

541
00:25:37.039 –> 00:25:44.029
because if you get more than 99 I’m not

542
00:25:40.82 –> 00:25:47.179
sure that will actually take 100 I think

543
00:25:44.029 –> 00:25:49.039
it stops at 99 files and says the

544
00:25:47.179 –> 00:25:50.899
machine has gone wrong it presents some

545
00:25:49.039 –> 00:25:53.389
sort of strange messy junk which tells

546
00:25:50.899 –> 00:25:54.470
you there’s no file space available take

547
00:25:53.389 –> 00:25:56.779
a look at the files that you’ve got

548
00:25:54.47 –> 00:25:59.389
stored in here that you’re unlikely to

Transcript for Laser Machine Maintenance (Cont…)

549
00:25:56.779 –> 00:26:01.850
need or they were once off throw them

550
00:25:59.389 –> 00:26:04.159
away space in this file system is at a

551
00:26:01.85 –> 00:26:06.440
premium so just make sure you include

552
00:26:04.159 –> 00:26:08.600
this as part of your regular maybe once

553
00:26:06.44 –> 00:26:10.340
a month webs every 2 or 3 months you’ll

554
00:26:08.6 –> 00:26:11.269
come in here and just throw away the

555
00:26:10.34 –> 00:26:14.210
stuff you don’t want

556
00:26:11.269 –> 00:26:15.860
I now have gotten a habit of after I’ve

557
00:26:14.21 –> 00:26:19.750
used a file that I know I’m only going

558
00:26:15.86 –> 00:26:22.039
to use once I immediately delete it

559
00:26:19.75 –> 00:26:23.840
there are other things you can check

560
00:26:22.039 –> 00:26:26.720
from time to time things like about

561
00:26:23.84 –> 00:26:28.760
tensions but to be honest they’re not

562
00:26:26.72 –> 00:26:30.830
the sort of thing they’re not likely to

563
00:26:28.76 –> 00:26:32.929
change very much well as I’ve mentioned

564
00:26:30.83 –> 00:26:35.539
to you several times before this is a

565
00:26:32.929 –> 00:26:37.940
nicely engineered machine and really it

566
00:26:35.539 –> 00:26:39.409
doesn’t need much maintenance if you

567
00:26:37.94 –> 00:26:42.500
have a pure X or a Beaufort

568
00:26:39.409 –> 00:26:44.480
recirculating filter unit you only have

569
00:26:42.5 –> 00:26:46.159
to keep an eye on the display and it

570
00:26:44.48 –> 00:26:47.840
tells you whether or not you need to

571
00:26:46.159 –> 00:26:49.760
change your filters or whether a filter

572
00:26:47.84 –> 00:26:51.710
changes coming up so there’s nothing you

573
00:26:49.76 –> 00:26:54.830
can do about that you have to wait for

574
00:26:51.71 –> 00:26:56.480
the unit to tell you this machine you

575
00:26:54.83 –> 00:26:59.389
could be proactive with your maintenance

576
00:26:56.48 –> 00:27:02.149
and as I said to you you need to keep an

577
00:26:59.389 –> 00:27:04.789
eye on particularly the lens and the

578
00:27:02.149 –> 00:27:05.440
nozzle that’s where your major problems

579
00:27:04.789 –> 00:27:07.330
are going to

580
00:27:05.44 –> 00:27:08.500
that’s something you should do very

581
00:27:07.33 –> 00:27:11.260
regularly

582
00:27:08.5 –> 00:27:13.660
I can’t say what very regularly means

583
00:27:11.26 –> 00:27:15.580
because it depends on the use that you

584
00:27:13.66 –> 00:27:17.620
put your machine to if you’re using it

585
00:27:15.58 –> 00:27:22.000
in production then I would check that

586
00:27:17.62 –> 00:27:26.110
lens once at least a day and maybe twice

587
00:27:22.0 –> 00:27:27.310
a day at break times well it’s not much

588
00:27:26.11 –> 00:27:28.510
more I can tell you about the

589
00:27:27.31 –> 00:27:33.400
maintenance of this machine because

590
00:27:28.51 –> 00:27:34.840
there isn’t much more to maintain thank

591
00:27:33.4 –> 00:27:38.550
you very much for your time and I’ll

592
00:27:34.84 –> 00:27:38.550
catch up with you in the next session

Transcript for Laser Machine Maintenance

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