0:00in this video we’re going to do a quick
0:02walkthrough of some of the new features
0:04of LightBurn node editing so
0:08quickly the built-in shapes in light
0:11burn are we would call primitives they
0:15exist and understand that they are a
0:18circle or a square or an ellipse or
0:21whatever in order to edit these if I go
0:26to node edit mode nothing shows up here
0:30in order to edit these shapes I have to
0:32 convert them first into something that
0:35is editable
0:36this goes for text as well if I created
0:39 a string and try to node edit this I
0:44 can’t do it you have to take these
0:48 shapes and convert to path first because
0:52 that turns them into lines and curves
0:55 and so on with editable points so you
0:58 can quickly do this with more than one
1:00 shape at a time I can select both of
1:02 these for example and say convert to
1:04 path and now these are editable shapes
1:07 as well and you can see I can grab the
1:09 points we marked so among the changes
1:14 that have happened recently I go to node edit
1:17 mode hovering over a point and
1:21 hitting the D key will delete that point
1:24 hovering over a line I’m hitting the D
1:27key will delete the line and it breaks
1:29 the shape when you delete a point if
1:32you’re working with a closed shape it
1:34 keeps the shape closed if you are
1:36 deleting a line it just removes the line
1:38and leaves all of the other pieces
1:39intact
1:40 if I delete a point from the end of an
1:44existing open curve like this one it
1:47will delete this and the other line that
1:49was connected to it because there’s
1:51nowhere for it to go I’m going to delete
1:55this line we can also hit the I key to
2:01insert a point along an existing line so
2:04if I here for example I can extend this
2:07shape if I want to
2:13again hitting D over an existing point
2:17deletes the point if you hit s over a
2:23corner vertex like this hitting s will
2:27smooth that point and it turns the lines
2:30on either side of it into smooth lines
2:33and exposes their control points so you
2:35can move them around if I hit S over an
2:40existing line it converts the line into
2:43a smooth line but it leaves it intact it
2:45leaves the shape alone
2:46so that I can move these control handles
2:49but the the this point wasn’t smooth for
2:53me to begin with it was just that the
2:54line was turned into a smooth line if I
2:57hover over this one and hit s even
3:00though these lines on either side of it
3:03were already smooth it makes this point
3:06a smooth point and you can see that the
3:08point turns into a circle and that means
3:11that these two control handles are now
3:13locked to each other they’re always
3:14going to be in a straight and continuous
3:17line like this so this is a smooth point
3:20and it means that any line traveling
3:24through that point will be smooth and
3:26continuous if I hole or if I hit the C
3:28key over this point you can see that it
3:31turns into a small square and that means
3:33that these two control handles you now
3:35not linked anymore and this is called a
3:37cusp it is a sharp corner of a spline
3:41and so I can make a sharp corner with
3:46lines or smooth curves going into it
3:48again hitting s turns it into a smooth
3:51point hitting the C turns it into a
3:54corner point or a cusp all of this is of
3:59course undoable renewable and so on and
4:02so on and so on I’m going to delete this
4:07line I’m going to show you something
4:09else now so if I create a line if I use
4:14the pen tool and I create a line from an
4:16existing point light burn will
4:20automatically snap
4:21to existing points but it doesn’t do
4:25anything intelligent with that yet
4:29however when you’re in LightBurn node editing mode
4:32if I drag this point and it snaps to an
4:35existing shape when I let go like burn
4:38welds those two things together or
4:40connects them it’s like using the auto
4:42join tool so if you edit Auto joining
4:47selected shapes that’s exactly what’s
4:49happening when I drag two points
4:52together and snap them so you can see
4:54now this has become one continuous shape
4:56and I can do the same thing at this
4:57point if I bring this over here it snaps
5:00and those are now one point so it’s one
5:03closed shape so if you want to create
5:07multiple shapes and connect them
5:09together this is a great way to do it so
5:10I’m going to create a circle duplicate
5:14the circle and move it over here take
5:18both of these shapes convert them to
5:20paths so that I can edit them delete
5:24those two curves by hitting D key and
5:26these two as well and I’m going to use
5:28the pen tool to just draw a line here
5:31draw another line here and then drag
5:37these to snap them together and I’ve now
5:44made a continuous closed shape I could
5:46preview this you can see that it is a
5:48solid shape because if it wasn’t the
5:52scan wouldn’t work I’ve also added
6:00what’s called perforation mode so if you
6:03do work with paper card things like that
6:08where you want to create folding lines
6:11you could do it previously by using just
6:14a low power cut but it’s probably easier
6:18to use a perforation so I’m going to set
6:20this to cut two millimeters and skip say
6:25one meter one millimeter just so you can
6:26see them apart to tell them apart if I
6:29preview this you see like Burton turns
6:34this continuous line into a dashed line
6:36and this is actually what’s going to get
6:38sent to the laser I show the traversal
6:40moves you can see all the little red
6:42traversals in between the nice thing
6:45about having light burden do this for
6:46you is that it’s still planned properly
6:49as a path or a curve so if I put two or
6:54three shapes inside other shapes or
6:59around other shapes and so on so all of
7:01these are set to use that perforation
7:04mode if you look at the order of these
7:07light burn is going to cut the inside
7:09shapes first and then cut the outer
7:14shape even though this is not a
7:17container or not a closed shape when
7:20it’s finished because it’s a closed
7:21shape here like burnt treats it as such
7:23and we’ll plan it accordingly another
7:27useful new feature is a fill mode oh
7:31sorry
7:32flood fill mode if you have a laser that
7:35is relatively slow or you are creating
7:39something like picture frame that has
7:42scanned details on the outside but
7:44nothing on the inside so let’s do create
7:50some circles here paste them into this
7:56frame so this is obviously terrible you
8:01would never do this but that’s okay so
8:03I’m going to set this to scan now on a
8:07normal system like Burton will scan left
8:10to right all the way from the bottom to
8:12the top
8:13now these traversal moves are the ones
8:14shown in red and you can see we’ve got a
8:17lot of traversal here and relatively
8:20little cutting happening because the
8:23laser is scanning all the way across
8:25from left to right and back again over
8:28this shape that’s got a lot of empty
8:30space in the middle for a laser that
8:33moves very quickly this is probably not
8:36an issue unless you’re doing something
8:37quite large for slower systems diet
8:41based lasers things like that this would
8:42be quite a problem and it would add an
8:45awful lot to your cutting time
8:47so labor now has what’s called
8:49flood-fill scanning if I enable that and
8:52then show the preview even if I turn on
8:56traversal moves you can see there’s very
8:57little in terms of traversal happening
9:00here and the reason for that is Mike
9:04Byrne is scanning back and forth across
9:06these things and here it’s skipping over
9:10and filling this area because these
9:13things are close enough there’s a
9:15threshold that it uses to decide whether
9:18or not two things are close enough to
9:20warrant keeping them together in one
9:22continuous move or not and so it’s going
9:27to scan up at the top and come down the
9:30bottom or down the side sorry and then
9:33it’ll go and fill in the last few
9:35details that it missed if I increased
9:38speed of this cut to say 200 and then
9:44rerun that preview now these things are
9:47close enough that it’s going to catch
9:49them all in one go
9:51because the laser is moving faster like
9:53Bernie knows that it’s quicker probably
9:55to jump across this gap and keep going
9:58then it would be to change direction and
10:01go back later if I set this slower down
10:05to 50 millimeters a second now very few
10:12of these are going to be filled in all
10:15at once and you can see it’s going to
10:18skip past those and then go and fill
10:22them in on the way back so laser fill
10:28mode is useful for filling in shapes
10:32that have large areas of white space
10:34where you want to avoid traversing
10:37around traversing across the white space
10:39if you have a laser that moves fairly
10:41quickly
10:41I wouldn’t recommend using this unless
10:44you time it and make sure that it is
10:47actually faster than just using a
10:49standard scan you might be surprised at
10:53how often it ends up being slower if you
10:55have a quick laser
