47 – Understanding Backlash and Scanning Reverse Interval (29:45)

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. The Lightblade 4060 has a 400 x 600mm bed size and was supplied with a 60W EFR laser tube. In this session Russ discusses and explains Backlash and Scanning Reverse Interval and how they impact on the quality of your laser cutting and engraving.

Backlash and Scanning Reverse Interval - Drive System
Backlash and Scanning Reverse Interval – Drive System

Contents

  • (Interval=Offset)
  • Illustration and description of backlash.
  • Effect of inertia generating uncertainty of position of driven component.
  • Looking at the action of a belt during the operation of the laser.
  • Demonstrating backlash happening.
  • Changing the backlash correction in the ‘User’ settings and re-running the test.
  • Creating a backlash test program in RDWorks.
  • Trying out the test program and then trying different correction settings.
  • Looking at the results under the microscope.
  • Adjust the backlash before setting the scanning reverse offset.
  • Demonstration of incorrect backlash adjustment.

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.

Previous VideoNext VideoSeries Menu

Video Resource Files

There are no more resource files associated with this video.

External Resource Links

www.thinklaser.com

www.rdworkslab.com

What can a laser cutter cut?

There are no more external resource links associated with this video.

Transcript for Understanding Backlash and Scanning Reverse Interval

Click the “Show More” button to reveal the transcript, and use your browsers Find function to search for specific sections of interest.

1
00:00:05.32 –> 00:00:12.970
[Music]

2
00:00:16.13 –> 00:00:22.800
welcome to another light leg learning

3
00:00:18.6 –> 00:00:25.439
map today I’ve forsaken my cup of black

4
00:00:22.8 –> 00:00:27.060
coffee in favor of something more

5
00:00:25.439 –> 00:00:30.419
suitable to the lovely sunny weather

6
00:00:27.06 –> 00:00:30.930
outside this is just what it says on the

7
00:00:30.419 –> 00:00:34.620
can

8
00:00:30.93 –> 00:00:38.149
a curious brew it’s a lovely light beer

9
00:00:34.62 –> 00:00:41.640
that’s fermented with a champagne yeast

10
00:00:38.149 –> 00:00:42.390
it’s a mixture of wine and beer curious

11
00:00:41.64 –> 00:00:49.140
yes

12
00:00:42.39 –> 00:00:51.930
enjoyable very much so now today we’re

13
00:00:49.14 –> 00:00:55.590
going to touch on a subject that is not

14
00:00:51.93 –> 00:00:57.540
very well understood I certainly thought

15
00:00:55.59 –> 00:00:59.790
I understood it but realize that didn’t

16
00:00:57.54 –> 00:01:01.410
know too much about it until I had to

17
00:00:59.79 –> 00:01:05.850
look into it quite deeply to help

18
00:01:01.41 –> 00:01:09.600
somebody else just recently the subject

19
00:01:05.85 –> 00:01:13.860
is backlash and associated with that we

20
00:01:09.6 –> 00:01:16.560
have scanning reverse offset or scanning

21
00:01:13.86 –> 00:01:18.899
reverse interval as I think it says in

22
00:01:16.56 –> 00:01:22.319
our t-works now anybody that used

23
00:01:18.899 –> 00:01:27.329
machinery will have probably come across

24
00:01:22.319 –> 00:01:29.880
the term backlash but scanning reverse

25
00:01:27.329 –> 00:01:31.709
interval that’s a different matter so

26
00:01:29.88 –> 00:01:33.869
what we do we try and define both those

27
00:01:31.709 –> 00:01:35.819
terms and separate them out because on

28
00:01:33.869 –> 00:01:38.369
this machine they have completely

29
00:01:35.819 –> 00:01:41.459
different means although they may look

30
00:01:38.369 –> 00:01:43.499
the same now I’ve got a couple of pieces

31
00:01:41.459 –> 00:01:46.289
of scrap perspex here which I pulled out

32
00:01:43.499 –> 00:01:49.459
the pin which very conveniently will

33
00:01:46.289 –> 00:01:54.060
allow me to demonstrate what backlash is

34
00:01:49.459 –> 00:01:56.310
now here I’ve got a driving system and

35
00:01:54.06 –> 00:01:59.880
here I’ve got something that I want to

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

36
00:01:56.31 –> 00:02:03.630
move now this could be the head of this

37
00:01:59.88 –> 00:02:05.249
machine and this could be I don’t want

38
00:02:03.63 –> 00:02:08.880
to call it the belt but let’s call it

39
00:02:05.249 –> 00:02:10.890
the drive system when the drive system

40
00:02:08.88 –> 00:02:12.700
could be right the way back to the

41
00:02:10.89 –> 00:02:16.810
stepper motor

42
00:02:12.7 –> 00:02:21.580
the pulleys the belt anything it’s just

43
00:02:16.81 –> 00:02:24.790
a system now if I move this system X

44
00:02:21.58 –> 00:02:29.310
amount look what happens to the blue

45
00:02:24.79 –> 00:02:31.780
rectangle it moves X amount as well

46
00:02:29.31 –> 00:02:34.930
now that’s brilliant while I’m moving in

47
00:02:31.78 –> 00:02:39.130
that direction but when I reverse and

48
00:02:34.93 –> 00:02:43.440
come back in the other direction and get

49
00:02:39.13 –> 00:02:48.540
back to my start point I haven’t brought

50
00:02:43.44 –> 00:02:48.540
the Blue Square back to its start point

51
00:02:49.65 –> 00:02:58.959
it’s failing to make this dimension here

52
00:02:53.799 –> 00:02:59.790
Y which is the same dimension that we’ve

53
00:02:58.959 –> 00:03:02.790
got here

54
00:02:59.79 –> 00:03:02.790
y

55
00:03:04.069 –> 00:03:10.959
so the clearance in the system

56
00:03:06.849 –> 00:03:14.799
represents something called backlash now

57
00:03:10.959 –> 00:03:18.620
this is all very well provided you have

58
00:03:14.799 –> 00:03:21.950
friction in your system because whenever

59
00:03:18.62 –> 00:03:25.099
I move forward now I shall pick up and

60
00:03:21.95 –> 00:03:27.170
take that head to there and when I move

61
00:03:25.099 –> 00:03:29.150
backwards I shall pick it up and

62
00:03:27.17 –> 00:03:32.120
predictably bring the head back to that

63
00:03:29.15 –> 00:03:34.639
same position if I get a predictable

64
00:03:32.12 –> 00:03:38.060
backlash like that I could probably use

65
00:03:34.639 –> 00:03:41.200
some sort of electronic correction to

66
00:03:38.06 –> 00:03:45.950
deal with it but the problem is this is

67
00:03:41.2 –> 00:03:49.250
mechanical backlash and it’s of a form

68
00:03:45.95 –> 00:03:51.859
which is uncertain because look I’ve got

69
00:03:49.25 –> 00:03:54.560
all this uncertainty in here so if I

70
00:03:51.859 –> 00:03:56.889
move from this position to this position

71
00:03:54.56 –> 00:03:59.780
here quickly

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

72
00:03:56.889 –> 00:04:03.109
look what happens the inertia of this

73
00:03:59.78 –> 00:04:06.439
piece has taken it away from its driving

74
00:04:03.109 –> 00:04:08.449
edge into a zone of uncertainty we do

75
00:04:06.439 –> 00:04:11.239
not know where the head actually has

76
00:04:08.449 –> 00:04:13.699
finished up it’s anywhere in this Y

77
00:04:11.239 –> 00:04:15.650
dimension and we can’t correct for that

78
00:04:13.699 –> 00:04:19.120
electronically because it’s totally

79
00:04:15.65 –> 00:04:21.680
random and uncertain this is mechanical

80
00:04:19.12 –> 00:04:24.220
backlash and something that you will

81
00:04:21.68 –> 00:04:26.750
have to deal with on the machine itself

82
00:04:24.22 –> 00:04:29.270
you’ll have to find out where that error

83
00:04:26.75 –> 00:04:31.099
is if you come across such an error and

84
00:04:29.27 –> 00:04:33.289
you know you’re gonna have to physically

85
00:04:31.099 –> 00:04:35.570
do something to fix it now this

86
00:04:33.289 –> 00:04:37.970
particular machine it’s turned on at the

87
00:04:35.57 –> 00:04:40.340
moment and this is a servo controlled

88
00:04:37.97 –> 00:04:42.320
machine with very heavy-duty stepper

89
00:04:40.34 –> 00:04:46.400
motors that locks into position

90
00:04:42.32 –> 00:04:48.440
extremely well and I can move of putting

91
00:04:46.4 –> 00:04:52.010
quite a lot of force on this head and I

92
00:04:48.44 –> 00:04:54.620
cannot move it but that’s good because

93
00:04:52.01 –> 00:04:57.229
if I could move it if I could feel any

94
00:04:54.62 –> 00:04:59.870
sort of wobble in there at all a little

95
00:04:57.229 –> 00:05:02.900
bit of stitches then it means that I’ve

96
00:04:59.87 –> 00:05:04.789
got this mechanical backlash there’s no

97
00:05:02.9 –> 00:05:07.039
wobble on that head at all so I have

98
00:05:04.789 –> 00:05:08.960
zero mechanical backlash in the system

99
00:05:07.039 –> 00:05:11.300
which is brilliant and that comes about

100
00:05:08.96 –> 00:05:13.520
probably by mainly tensioning up the

101
00:05:11.3 –> 00:05:14.160
belt to get rid of the backlash there is

102
00:05:13.52 –> 00:05:16.020
another sort

103
00:05:14.16 –> 00:05:18.600
backlash that occurs on this machine

104
00:05:16.02 –> 00:05:20.580
which I believe is what the backlash

105
00:05:18.6 –> 00:05:24.120
compensation on this machine is all

106
00:05:20.58 –> 00:05:26.280
about and it basically comes down to a

107
00:05:24.12 –> 00:05:30.990
design weakness that’s built into all of

108
00:05:26.28 –> 00:05:33.600
these belt driven machines now at this

109
00:05:30.99 –> 00:05:37.080
end of the system here we’ve got the

110
00:05:33.6 –> 00:05:39.270
drive for this X now this one this

111
00:05:37.08 –> 00:05:41.070
smaller pulley has probably got about 24

112
00:05:39.27 –> 00:05:43.500
teeth on it we’re gonna have a little

113
00:05:41.07 –> 00:05:45.990
very close look at what’s going on just

114
00:05:43.5 –> 00:05:48.810
here where my finger is now I’m gonna

115
00:05:45.99 –> 00:05:52.020
run a scanning program and I want you to

116
00:05:48.81 –> 00:05:54.210
watch what happens to this belt at the

117
00:05:52.02 –> 00:05:56.430
top here watch it in relation to

118
00:05:54.21 –> 00:05:58.950
something in the background and you’ll

119
00:05:56.43 –> 00:06:00.780
see this belt rise up and go down and

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

120
00:05:58.95 –> 00:06:03.230
come up and go down as we change

121
00:06:00.78 –> 00:06:03.230
direction

122
00:06:03.56 –> 00:06:10.430
so I think you can probably clearly see

123
00:06:06.62 –> 00:06:13.220
the belt rising as it goes onto the

124
00:06:10.43 –> 00:06:15.400
pulley and falling as it comes off the

125
00:06:13.22 –> 00:06:15.400
pulley

126
00:06:16.1 –> 00:06:19.880
you can see it by watching the belt

127
00:06:18.35 –> 00:06:23.140
rising and falling just at the back

128
00:06:19.88 –> 00:06:23.140
there relative to something

129
00:06:23.4 –> 00:06:27.860
no the belt on this machine is a

130
00:06:25.53 –> 00:06:30.120
fixed-length it can’t change its length

131
00:06:27.86 –> 00:06:31.710
now although I’ve shown you the top of

132
00:06:30.12 –> 00:06:33.690
the belt because it’s much easier to see

133
00:06:31.71 –> 00:06:35.520
that exactly the same thing is happening

134
00:06:33.69 –> 00:06:37.889
on the bottom of the belt where the head

135
00:06:35.52 –> 00:06:40.979
is attached to so when this pulley

136
00:06:37.889 –> 00:06:43.199
changes direction and this belt all of a

137
00:06:40.979 –> 00:06:45.479
sudden decides it’s going to do that I

138
00:06:43.199 –> 00:06:48.259
hope you can see what’s happening to the

139
00:06:45.479 –> 00:06:51.210
head as that belt moves up and down

140
00:06:48.259 –> 00:06:54.090
that’s what happens as the belt rises

141
00:06:51.21 –> 00:06:56.370
and falls can you see how it’s changing

142
00:06:54.09 –> 00:06:57.360
the position of the head now it won’t be

143
00:06:56.37 –> 00:06:59.190
a huge amount

144
00:06:57.36 –> 00:07:02.039
I mean I’m grossly exaggerating it with

145
00:06:59.19 –> 00:07:03.990
what I’m doing but the error is there

146
00:07:02.039 –> 00:07:07.250
and that’s what I believe

147
00:07:03.99 –> 00:07:10.110
really backlash is all about it’s not

148
00:07:07.25 –> 00:07:13.440
really backlash there are two problems

149
00:07:10.11 –> 00:07:17.820
associated with these pulleys number one

150
00:07:13.44 –> 00:07:21.270
is that the actual teeth on the belt are

151
00:07:17.82 –> 00:07:24.509
not a perfect match for the tooth form

152
00:07:21.27 –> 00:07:27.300
that’s in there there is a very small

153
00:07:24.509 –> 00:07:29.070
amount of clearance between these teeth

154
00:07:27.3 –> 00:07:32.400
and the belt

155
00:07:29.07 –> 00:07:35.760
sideways because the belt has to locate

156
00:07:32.4 –> 00:07:38.520
right in the bottom of its groove and on

157
00:07:35.76 –> 00:07:41.610
the top of the teeth it can’t locate on

158
00:07:38.52 –> 00:07:44.280
the tapered sides of the teeth both

159
00:07:41.61 –> 00:07:47.580
sides at once it has to locate on one

160
00:07:44.28 –> 00:07:51.060
side or the other now okay that backlash

161
00:07:47.58 –> 00:07:53.340
that clearance is very small but that’s

162
00:07:51.06 –> 00:07:55.199
one sort of clearance that exists in

163
00:07:53.34 –> 00:07:57.659
this system and there’s nothing we can

164
00:07:55.199 –> 00:07:59.639
do about it the other thing that exists

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

165
00:07:57.659 –> 00:08:02.370
in this self system is what you’ve just

166
00:07:59.639 –> 00:08:05.849
seen me demonstrate here belt climb and

167
00:08:02.37 –> 00:08:08.820
that’s because the first tooth being

168
00:08:05.849 –> 00:08:11.550
rubber or any material it will tend to

169
00:08:08.82 –> 00:08:13.590
get stuck on the side of the on the

170
00:08:11.55 –> 00:08:16.409
flank of the pulley tooth and it will

171
00:08:13.59 –> 00:08:18.240
lift up and it’s not until it gets 2 or

172
00:08:16.409 –> 00:08:20.639
3 teeth into engagement that it fully

173
00:08:18.24 –> 00:08:23.099
sits down where it should do around the

174
00:08:20.639 –> 00:08:24.870
pulley and that’s what’s causing this

175
00:08:23.099 –> 00:08:27.840
effect now

176
00:08:24.87 –> 00:08:30.389
it’s a fairly small error and it’s not a

177
00:08:27.84 –> 00:08:32.430
big issue for the simplicity of this

178
00:08:30.389 –> 00:08:35.640
drive but this drive system was never

179
00:08:32.43 –> 00:08:37.979
designed for very precision control of

180
00:08:35.64 –> 00:08:41.849
systems like this it was designed for

181
00:08:37.979 –> 00:08:44.760
power transmission in one direction only

182
00:08:41.849 –> 00:08:47.880
and it’s excellent at doing that job and

183
00:08:44.76 –> 00:08:50.010
it’s 98 99 percent good for doing this

184
00:08:47.88 –> 00:08:52.290
job but there are some little weaknesses

185
00:08:50.01 –> 00:08:55.380
that I’ve just demonstrated to you now

186
00:08:52.29 –> 00:09:00.200
this offset that occurs every time we

187
00:08:55.38 –> 00:09:02.940
change direction is predictable and

188
00:09:00.2 –> 00:09:06.510
therefore we can do something about it

189
00:09:02.94 –> 00:09:07.770
now in case you don’t believe me what

190
00:09:06.51 –> 00:09:11.450
I’m going to do is just a very quick

191
00:09:07.77 –> 00:09:11.450
demonstration at the moment for you

192
00:09:13.59 –> 00:09:25.620
we’re going to set the maximum power to

193
00:09:16.34 –> 00:09:30.660
about 10% I’ve very carefully driven the

194
00:09:25.62 –> 00:09:35.460
head so that the X is exactly 300 and

195
00:09:30.66 –> 00:09:41.460
I’m going to draw a line down there like

196
00:09:35.46 –> 00:09:43.710
that okay so that’s a line at 300 in X

197
00:09:41.46 –> 00:09:49.140
I’m now going to press the reset button

198
00:09:43.71 –> 00:09:51.930
and I want you to note which way the

199
00:09:49.14 –> 00:09:55.640
head is moving as it stops on that line

200
00:09:51.93 –> 00:09:56.790
because that’s the origin that I set

201
00:09:55.64 –> 00:09:59.339
okay

202
00:09:56.79 –> 00:10:00.270
it came in cleanly and stopped it didn’t

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

203
00:09:59.339 –> 00:10:03.540
go like that

204
00:10:00.27 –> 00:10:06.029
it stopped on the line I’m now going to

205
00:10:03.54 –> 00:10:11.670
move down the tree down the line a

206
00:10:06.029 –> 00:10:13.200
little bit and I’m gonna do a pulse I’m

207
00:10:11.67 –> 00:10:17.370
now going to move down the line a little

208
00:10:13.2 –> 00:10:19.500
bit further and I’m going to again press

209
00:10:17.37 –> 00:10:24.240
the origin button bearing in mind the

210
00:10:19.5 –> 00:10:26.160
keyboard still says exactly 300 and I’m

211
00:10:24.24 –> 00:10:28.830
now going to run a very small program

212
00:10:26.16 –> 00:10:33.860
and I want you to watch which direction

213
00:10:28.83 –> 00:10:33.860
the head arrives back at this line

214
00:10:34.03 –> 00:10:40.730
they were dope very quick but it arrived

215
00:10:37.13 –> 00:10:44.210
back in that direction the opposite

216
00:10:40.73 –> 00:10:47.990
direction to which it reset so let’s

217
00:10:44.21 –> 00:10:49.370
press the pulse button again and let’s

218
00:10:47.99 –> 00:10:53.060
have a look at the results that we’ve

219
00:10:49.37 –> 00:10:56.210
produced okay so here’s our scan line

220
00:10:53.06 –> 00:10:58.010
and just to put some sort of proportion

221
00:10:56.21 –> 00:11:01.970
onto it we will just check what

222
00:10:58.01 –> 00:11:05.210
dimension the line width is and there’s

223
00:11:01.97 –> 00:11:08.390
a point to reference line there point to

224
00:11:05.21 –> 00:11:10.670
wide and I think we can yeah it’s pretty

225
00:11:08.39 –> 00:11:12.860
reasonable about a point to wide line

226
00:11:10.67 –> 00:11:17.240
now when I did the drawing of that line

227
00:11:12.86 –> 00:11:20.180
I came in from a reset position and when

228
00:11:17.24 –> 00:11:23.330
I did that dot I came in from a reset

229
00:11:20.18 –> 00:11:25.390
position so technically the dot should

230
00:11:23.33 –> 00:11:29.360
sit on top of the line and it does

231
00:11:25.39 –> 00:11:32.030
within a very very small amount but when

232
00:11:29.36 –> 00:11:36.200
we did the second dot we came in from

233
00:11:32.03 –> 00:11:38.630
the opposite direction and I think you

234
00:11:36.2 –> 00:11:41.810
can clearly see know that we’re half a

235
00:11:38.63 –> 00:11:44.480
dot out of position and because the line

236
00:11:41.81 –> 00:11:47.480
thickness is point two I think we can

237
00:11:44.48 –> 00:11:51.530
probably safely say that that dot is 0.1

238
00:11:47.48 –> 00:11:53.990
of a millimeter out of position now

239
00:11:51.53 –> 00:11:56.990
that’s a point one millimetre

240
00:11:53.99 –> 00:11:59.570
backlash because coming in from one

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

241
00:11:56.99 –> 00:12:02.570
direction it does not settle in the same

242
00:11:59.57 –> 00:12:07.190
position as when it comes in from that

243
00:12:02.57 –> 00:12:12.380
direction the keyboard says 300 for both

244
00:12:07.19 –> 00:12:17.420
of these positions they can’t both be

245
00:12:12.38 –> 00:12:21.730
right so this is where we have to now go

246
00:12:17.42 –> 00:12:25.610
in and look at the backlash correction

247
00:12:21.73 –> 00:12:31.570
now before I started this I connected my

248
00:12:25.61 –> 00:12:34.490
PC up and I have set my backlash to zero

249
00:12:31.57 –> 00:12:36.160
so there is an X backslash hiding here

250
00:12:34.49 –> 00:12:38.770
in the user settings

251
00:12:36.16 –> 00:12:40.950
so what I’m now going to do is to change

252
00:12:38.77 –> 00:12:40.950
that

253
00:12:41.95 –> 00:12:44.460
[Music]

254
00:12:43.36 –> 00:12:47.120
two point one

255
00:12:44.46 –> 00:12:50.559
[Music]

256
00:12:47.12 –> 00:12:50.559
nope yep point one

257
00:12:51.08 –> 00:12:55.990
and I’m going to write that back to the

258
00:12:52.76 –> 00:12:55.990
machine point one

259
00:12:56.14 –> 00:13:02.110
and now we run the same test again and

260
00:12:58.51 –> 00:13:03.779
we’ll see whether we’ve corrected so my

261
00:13:02.11 –> 00:13:07.060
ex is still at 300

262
00:13:03.779 –> 00:13:09.519
we’ve not origin set I will do a reset

263
00:13:07.06 –> 00:13:12.209
to make sure I bring the head in from

264
00:13:09.519 –> 00:13:12.209
this direction

265
00:13:17.06 –> 00:13:23.509
[Music]

266
00:13:18.229 –> 00:13:23.509
and I’ll draw my line at 300 in X

267
00:13:25.07 –> 00:13:35.210
[Music]

268
00:13:27.62 –> 00:13:37.370
and do I need to go back and set I can

269
00:13:35.21 –> 00:13:39.760
put a dot on there because I’ve already

270
00:13:37.37 –> 00:13:42.260
come in from the right hand direction

271
00:13:39.76 –> 00:13:45.470
we’ll go down and we’ll set a new origin

272
00:13:42.26 –> 00:13:47.990
point just they’re still at 300 on the

273
00:13:45.47 –> 00:13:50.800
keyboard and then we’ll do my little

274
00:13:47.99 –> 00:13:50.800
test

275
00:13:53.24 –> 00:14:00.559
and frame and now I’ll do another pose

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

276
00:13:58.389 –> 00:14:02.089
well here’s our first attempt at

277
00:14:00.559 –> 00:14:05.509
correcting the backlash

278
00:14:02.089 –> 00:14:08.839
there’s the dot coming in from the right

279
00:14:05.509 –> 00:14:12.350
and then here is the corrected result

280
00:14:08.839 –> 00:14:15.139
and it’s not bad but it looks as though

281
00:14:12.35 –> 00:14:17.420
we’ve overcorrected it with a point one

282
00:14:15.139 –> 00:14:22.160
backlash setting I’m now going to change

283
00:14:17.42 –> 00:14:25.540
the backlash to point zero five and now

284
00:14:22.16 –> 00:14:25.540
I’m going to run my little program

285
00:14:26.61 –> 00:14:30.170
press the post button again

286
00:14:28.8 –> 00:14:31.579
[Music]

287
00:14:30.17 –> 00:14:34.639
then let’s have a look what we’ve

288
00:14:31.579 –> 00:14:40.040
produced now so here’s our reference

289
00:14:34.639 –> 00:14:43.760
mark coming in from the right and here’s

290
00:14:40.04 –> 00:14:45.699
our mark coming in from the left I think

291
00:14:43.76 –> 00:14:51.350
you’ll see they’re both pretty well

292
00:14:45.699 –> 00:14:52.010
matched so 0.05 is my backlash on this

293
00:14:51.35 –> 00:14:54.320
machine

294
00:14:52.01 –> 00:14:57.430
now point oh five is about the thickness

295
00:14:54.32 –> 00:14:59.660
of a human hair that’s not a great deal

296
00:14:57.43 –> 00:15:03.079
it’s something you should be aware of

297
00:14:59.66 –> 00:15:04.850
this machine is particularly good not

298
00:15:03.079 –> 00:15:08.360
all machines are this good it really

299
00:15:04.85 –> 00:15:10.880
depends on the belts and the police and

300
00:15:08.36 –> 00:15:14.240
the number of teeth on your pulley that

301
00:15:10.88 –> 00:15:15.709
will determine this sort of offset now

302
00:15:14.24 –> 00:15:17.990
although I have to copy this program

303
00:15:15.709 –> 00:15:19.940
onto my PC next to the machine and run

304
00:15:17.99 –> 00:15:22.040
it from the machine while I’m in the

305
00:15:19.94 –> 00:15:24.860
office I will actually show you how to

306
00:15:22.04 –> 00:15:26.360
draw the next program which is a very

307
00:15:24.86 –> 00:15:29.720
important test program that you should

308
00:15:26.36 –> 00:15:31.610
probably keep on your machine so we’ve

309
00:15:29.72 –> 00:15:33.560
got to do a square and we’ll hold down

310
00:15:31.61 –> 00:15:35.120
the control key to make it a square and

311
00:15:33.56 –> 00:15:38.209
then I’m going to put a marquee around

312
00:15:35.12 –> 00:15:40.490
that that’s a control C for control copy

313
00:15:38.209 –> 00:15:42.230
and then control V we’ll put it at the

314
00:15:40.49 –> 00:15:45.290
cursor there we go

315
00:15:42.23 –> 00:15:50.050
so now I’ve produced a copy now the

316
00:15:45.29 –> 00:15:53.089
first one I’m going to do is a reference

317
00:15:50.05 –> 00:15:57.140
square and we’re going to put that onto

318
00:15:53.089 –> 00:16:00.980
a blue layer and we’re going to make

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

319
00:15:57.14 –> 00:16:04.160
that reference square let’s close the

320
00:16:00.98 –> 00:16:09.070
padlock click we’ll set the X or Y

321
00:16:04.16 –> 00:16:09.070
dimension up here to 20 millimeters

322
00:16:09.91 –> 00:16:15.890
we’ve just seen that the line that we’re

323
00:16:12.89 –> 00:16:20.930
likely to produce when we burn a line is

324
00:16:15.89 –> 00:16:25.420
about 2.2 diameter or point too wide now

325
00:16:20.93 –> 00:16:28.790
if I draw a line there will be a point 1

326
00:16:25.42 –> 00:16:30.980
round end on the end of the line that

327
00:16:28.79 –> 00:16:33.680
goes point 1 further than the line

328
00:16:30.98 –> 00:16:36.440
itself because the line will stop in the

329
00:16:33.68 –> 00:16:38.269
center of a dot and the other half dot

330
00:16:36.44 –> 00:16:41.959
will hang out beyond the end of the line

331
00:16:38.269 –> 00:16:43.370
that I’ve drawn so what I want to do is

332
00:16:41.959 –> 00:16:46.520
produce a gap

333
00:16:43.37 –> 00:16:50.270
I want to draw lines inside that square

334
00:16:46.52 –> 00:16:55.430
and I need the lines to be about point

335
00:16:50.27 –> 00:16:57.620
one clear on left and right so I’ve got

336
00:16:55.43 –> 00:17:00.529
to allow knowing that this is 20

337
00:16:57.62 –> 00:17:02.720
millimeters square I’ve got to take

338
00:17:00.529 –> 00:17:04.939
point 1 off each side for line thickness

339
00:17:02.72 –> 00:17:06.770
which brings it back down to 19 point

340
00:17:04.939 –> 00:17:08.900
eight then I’m going to take another

341
00:17:06.77 –> 00:17:13.030
point one off each side for a gap which

342
00:17:08.9 –> 00:17:15.199
brings it down to nineteen point six and

343
00:17:13.03 –> 00:17:18.800
then I’m going to have to take another

344
00:17:15.199 –> 00:17:21.740
point one off each end of the line which

345
00:17:18.8 –> 00:17:23.990
brings it down to nineteen point four so

346
00:17:21.74 –> 00:17:26.900
I want lines that are nineteen point

347
00:17:23.99 –> 00:17:29.990
four millimeters long so what I’m going

348
00:17:26.9 –> 00:17:34.190
to do now is to set this rep this square

349
00:17:29.99 –> 00:17:37.550
to nineteen point four okay now that one

350
00:17:34.19 –> 00:17:44.240
is black and we’re going to set that

351
00:17:37.55 –> 00:17:46.190
layer to scan not cut so we’re gonna set

352
00:17:44.24 –> 00:17:48.110
that layer to scan and we’re going to

353
00:17:46.19 –> 00:17:50.000
run that at four hundred millimeters a

354
00:17:48.11 –> 00:17:53.090
second or the fastest your speed will

355
00:17:50.0 –> 00:17:56.420
your axis will go maybe it’ll go 500 but

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

356
00:17:53.09 –> 00:18:05.270
400 is good enough 400 millimeters a

357
00:17:56.42 –> 00:18:08.870
second and probably 25% maybe 30% power

358
00:18:05.27 –> 00:18:13.730
to get a reasonable depth of burn at

359
00:18:08.87 –> 00:18:16.420
that speed 30% it may be too dark we

360
00:18:13.73 –> 00:18:22.100
might have to come back in it at that

361
00:18:16.42 –> 00:18:24.559
3030 scan yes yes yes and the interval I

362
00:18:22.1 –> 00:18:26.780
want the interval this time to be quite

363
00:18:24.559 –> 00:18:32.300
large point five because I want to see

364
00:18:26.78 –> 00:18:34.520
gaps between the lines and X swing so

365
00:18:32.3 –> 00:18:36.980
that we get scans in both directions we

366
00:18:34.52 –> 00:18:39.920
don’t want independent output so nothing

367
00:18:36.98 –> 00:18:44.510
in there so that’s a nice clean set of

368
00:18:39.92 –> 00:18:49.490
parameters 430 and X wink with 0.5

369
00:18:44.51 –> 00:18:50.780
interval now the next one is a cut now

370
00:18:49.49 –> 00:18:52.700
we’ve got to put the cut on the bottom

371
00:18:50.78 –> 00:18:57.200
because well that will happen naturally

372
00:18:52.7 –> 00:19:00.409
kappa rameters 200 that’s reasonable

373
00:18:57.2 –> 00:19:04.549
power probably not much more than about

374
00:19:00.409 –> 00:19:05.929
15 maybe 20 right so I’ve got one square

375
00:19:04.549 –> 00:19:08.750
which is going to be engraved with a

376
00:19:05.929 –> 00:19:10.789
series of lines and those lines I want

377
00:19:08.75 –> 00:19:12.740
to appear inside that reference square

378
00:19:10.789 –> 00:19:14.690
so what I’ve now got to do is make sure

379
00:19:12.74 –> 00:19:16.399
these two things line up with each other

380
00:19:14.69 –> 00:19:20.750
so we’ll make them line up horizontally

381
00:19:16.399 –> 00:19:22.909
and vertically and there we go one

382
00:19:20.75 –> 00:19:26.750
inside the other okay now before I’ve

383
00:19:22.909 –> 00:19:29.029
run I’ve been to config system settings

384
00:19:26.75 –> 00:19:32.179
and I have removed the tick from the

385
00:19:29.029 –> 00:19:34.399
scanning offset so there’s no scan

386
00:19:32.179 –> 00:19:35.840
offset involved at the moment and we’re

387
00:19:34.399 –> 00:19:38.659
just going to see what the natural

388
00:19:35.84 –> 00:19:41.110
machine does at 400 millimeters per

389
00:19:38.659 –> 00:19:41.110
second

390
00:19:46.62 –> 00:19:51.140
[Music]

391
00:19:48.73 –> 00:19:53.030
we’ll do a series of tests

392
00:19:51.14 –> 00:19:54.200
I will check them and then we’ll go and

393
00:19:53.03 –> 00:19:56.300
we’ll go and have a look under the

394
00:19:54.2 –> 00:19:59.330
microscope now we need to look carefully

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

395
00:19:56.3 –> 00:20:04.250
to work out which way the first line is

396
00:19:59.33 –> 00:20:10.460
drawn that’s very important I didn’t see

397
00:20:04.25 –> 00:20:12.230
that because it happened so quickly but

398
00:20:10.46 –> 00:20:15.170
I should be able to sort it out when I

399
00:20:12.23 –> 00:20:17.210
come to look at the video I know from a

400
00:20:15.17 –> 00:20:21.050
little bit of experience that when I

401
00:20:17.21 –> 00:20:26.630
look at this zero offset picture the

402
00:20:21.05 –> 00:20:28.250
error that I see is not very large now

403
00:20:26.63 –> 00:20:29.540
I’ll draw this in thick marker pen so

404
00:20:28.25 –> 00:20:33.710
you can see what I’m talking about

405
00:20:29.54 –> 00:20:36.950
but my first my square runs down like

406
00:20:33.71 –> 00:20:41.740
that and my first line starts there and

407
00:20:36.95 –> 00:20:41.740
it finishes up with a gap

408
00:20:41.799 –> 00:20:48.489
on the other side and then the second

409
00:20:45.34 –> 00:20:51.519
line starts there and finishes up with a

410
00:20:48.489 –> 00:20:55.509
gap on that side and the third line

411
00:20:51.519 –> 00:20:59.289
starts there and the fourth line starts

412
00:20:55.509 –> 00:21:01.960
there now that’s the offset problem now

413
00:20:59.289 –> 00:21:06.789
if my first line is going in that

414
00:21:01.96 –> 00:21:11.769
direction and it’s touching there I need

415
00:21:06.789 –> 00:21:14.619
to put a positive plus offset to move it

416
00:21:11.769 –> 00:21:16.690
across and at the same time what that

417
00:21:14.619 –> 00:21:19.450
will do that will also shift that line

418
00:21:16.69 –> 00:21:22.989
when I come in the other direction away

419
00:21:19.45 –> 00:21:26.350
from the edge as well so hopefully if I

420
00:21:22.989 –> 00:21:30.029
put a small positive offset in it will

421
00:21:26.35 –> 00:21:33.340
send my patterns the way that I expect

422
00:21:30.029 –> 00:21:34.960
now my first attempt because I know that

423
00:21:33.34 –> 00:21:38.409
the increments are quite a bit going to

424
00:21:34.96 –> 00:21:42.730
be very small I’m going to put something

425
00:21:38.409 –> 00:21:44.499
like about 0.02 in to start with and

426
00:21:42.73 –> 00:21:47.230
then we’ll put some larger increments in

427
00:21:44.499 –> 00:21:49.330
to see what happens

428
00:21:47.23 –> 00:21:52.090
so here we are in the config system

429
00:21:49.33 –> 00:21:54.519
setting window and I’ve already got 400

430
00:21:52.09 –> 00:21:57.610
millimeters per second in my table and

431
00:21:54.519 –> 00:21:59.320
I’ve set that to point zero two

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

432
00:21:57.61 –> 00:22:02.409
let me just show you how I’ve done that

433
00:21:59.32 –> 00:22:04.450
if I double click on it it brings this

434
00:22:02.409 –> 00:22:06.429
little window up where I get the

435
00:22:04.45 –> 00:22:09.669
opportunity to change the settings now

436
00:22:06.429 –> 00:22:12.850
I’ve put point o2 in there and say okay

437
00:22:09.669 –> 00:22:16.809
and it comes back into my table let’s

438
00:22:12.85 –> 00:22:18.600
point o2 and that’s all it is provided

439
00:22:16.809 –> 00:22:21.610
I’ve got my tick at the top corner here

440
00:22:18.6 –> 00:22:24.909
when I specified 400 millimeters a

441
00:22:21.61 –> 00:22:30.639
second in a scanning mode it will put

442
00:22:24.909 –> 00:22:33.669
that offset in if I put 399 in as my

443
00:22:30.639 –> 00:22:35.769
scanning speed it will be ignored it

444
00:22:33.669 –> 00:22:40.000
will be as though that tick is not there

445
00:22:35.769 –> 00:22:44.159
so you have to put in a number for every

446
00:22:40.0 –> 00:22:44.159
scanning speed that you plan to use

447
00:22:51.01 –> 00:22:55.120
[Music]

448
00:22:53.59 –> 00:22:56.890
well I think when we look at that under

449
00:22:55.12 –> 00:22:58.540
the microscope you’ll see that we can’t

450
00:22:56.89 –> 00:23:02.890
get much more perfect than I’ve got

451
00:22:58.54 –> 00:23:05.470
there so I’ve now set my backlash and my

452
00:23:02.89 –> 00:23:07.360
scanning offset the backlash won’t

453
00:23:05.47 –> 00:23:11.020
change but the scanning offset will

454
00:23:07.36 –> 00:23:14.320
change for different speeds so let me

455
00:23:11.02 –> 00:23:18.430
just prove by putting in a silly number

456
00:23:14.32 –> 00:23:20.350
either side of my perfect results this

457
00:23:18.43 –> 00:23:25.240
one has now been corrected with a naught

458
00:23:20.35 –> 00:23:27.160
point oh two millimeters now point out

459
00:23:25.24 –> 00:23:30.160
two millimeters there’s only half hair

460
00:23:27.16 –> 00:23:33.060
but it makes a huge difference to the

461
00:23:30.16 –> 00:23:33.060
look of this pattern

462
00:23:35.42 –> 00:23:40.710
so now what I’m going to do I’m going to

463
00:23:37.89 –> 00:23:42.720
go plus one millimeter and – one

464
00:23:40.71 –> 00:23:44.460
millimeter and we’ll see what effect it

465
00:23:42.72 –> 00:23:47.010
has on the pattern this is the first

466
00:23:44.46 –> 00:23:49.950
test when we had the scanning offset set

467
00:23:47.01 –> 00:23:53.100
to nothing it was not ticked at all so

468
00:23:49.95 –> 00:23:57.450
it was not operative and our first line

469
00:23:53.1 –> 00:23:59.580
ran from right to left now I’m going to

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

470
00:23:57.45 –> 00:24:02.700
keep stressing this you must understand

471
00:23:59.58 –> 00:24:05.550
which way that top line goes because it

472
00:24:02.7 –> 00:24:06.870
helps you to sort out what Corrections

473
00:24:05.55 –> 00:24:09.510
you’re making and whether you’re over

474
00:24:06.87 –> 00:24:12.150
correcting because you can easily send

475
00:24:09.51 –> 00:24:16.170
that line out the other way and get

476
00:24:12.15 –> 00:24:18.210
confused the second line should not be

477
00:24:16.17 –> 00:24:20.460
touching the pattern and the first line

478
00:24:18.21 –> 00:24:23.490
appears to not be touching the pattern

479
00:24:20.46 –> 00:24:27.950
fine but in reality it probably is

480
00:24:23.49 –> 00:24:30.270
because if we look at lines 3 5 7 etc

481
00:24:27.95 –> 00:24:31.890
you’ll see that they are all touching

482
00:24:30.27 –> 00:24:33.810
the pattern the only reason why the

483
00:24:31.89 –> 00:24:35.850
first line wasn’t touching the pattern

484
00:24:33.81 –> 00:24:38.550
is because that is where it actually

485
00:24:35.85 –> 00:24:41.010
started from the head came across and

486
00:24:38.55 –> 00:24:42.780
started to accelerate in there once the

487
00:24:41.01 –> 00:24:45.570
head got to the right hand end of this

488
00:24:42.78 –> 00:24:47.880
line it was running at high speed it

489
00:24:45.57 –> 00:24:50.880
zipped off to the end here stopped

490
00:24:47.88 –> 00:24:52.590
turned round and accelerated back up and

491
00:24:50.88 –> 00:24:56.130
so it was already running at full speed

492
00:24:52.59 –> 00:25:00.330
before the beam switched on just here ok

493
00:24:56.13 –> 00:25:01.620
so when we get to lines 3 5 7 etc

494
00:25:00.33 –> 00:25:04.080
they’re the ones that you need to look

495
00:25:01.62 –> 00:25:06.540
at to see what’s happening on like what

496
00:25:04.08 –> 00:25:09.870
should be happening on line 1 now this

497
00:25:06.54 –> 00:25:13.890
second test I ticked the box to make the

498
00:25:09.87 –> 00:25:15.090
scanning offset operative but I set 400

499
00:25:13.89 –> 00:25:17.160
millimeters a second

500
00:25:15.09 –> 00:25:20.370
I set the scanning fact to the offset

501
00:25:17.16 –> 00:25:22.440
factor to zero so technically this

502
00:25:20.37 –> 00:25:25.890
should look exactly like the first

503
00:25:22.44 –> 00:25:28.470
pattern and it does so then we went on

504
00:25:25.89 –> 00:25:33.060
and I tried to choose I guesstimated

505
00:25:28.47 –> 00:25:36.750
what would be the perfect offset for my

506
00:25:33.06 –> 00:25:40.590
machine and here it is now with the

507
00:25:36.75 –> 00:25:43.620
eyeglass it looked a pretty good pattern

508
00:25:40.59 –> 00:25:45.990
nice and neat gaps down the left and the

509
00:25:43.62 –> 00:25:46.860
right hand side but now I say under the

510
00:25:45.99 –> 00:25:48.750
microscope I

511
00:25:46.86 –> 00:25:52.860
think I probably could have pushed

512
00:25:48.75 –> 00:25:56.130
another 0.01 in there and made it point

513
00:25:52.86 –> 00:25:57.840
Oh three offset as opposed to 0.02 now

514
00:25:56.13 –> 00:26:00.330
you might think that we’re being ultra

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

515
00:25:57.84 –> 00:26:01.890
fussy but this can have quite an

516
00:26:00.33 –> 00:26:05.370
interesting effect when you’re doing

517
00:26:01.89 –> 00:26:07.429
scanning it makes your lines the edge of

518
00:26:05.37 –> 00:26:10.159
your scanning rhaggy

519
00:26:07.429 –> 00:26:14.039
now I’d said that we would go and try

520
00:26:10.159 –> 00:26:16.350
extreme offsets and see what happens

521
00:26:14.039 –> 00:26:18.960
here’s what happens when we put plus one

522
00:26:16.35 –> 00:26:22.919
millimeter in and you can see what’s

523
00:26:18.96 –> 00:26:25.679
happened to the top line it’s pushed the

524
00:26:22.919 –> 00:26:28.950
top line to the left by a huge amount

525
00:26:25.679 –> 00:26:31.169
and the top line is hanging out over the

526
00:26:28.95 –> 00:26:33.600
edge of the square on the left there I

527
00:26:31.169 –> 00:26:35.850
need you to understand again this top

528
00:26:33.6 –> 00:26:40.130
line thing because when I look at the

529
00:26:35.85 –> 00:26:40.130
next pattern where we put minus one in

530
00:26:41.36 –> 00:26:48.240
look the top line is now hanging out the

531
00:26:45.299 –> 00:26:50.190
right-hand side of the pattern but if

532
00:26:48.24 –> 00:26:54.590
you just look at this pattern somewhere

533
00:26:50.19 –> 00:27:05.820
down here in the middle like this is

534
00:26:54.59 –> 00:27:09.179
that a minus one or is it a plus one you

535
00:27:05.82 –> 00:27:12.120
can’t tell which way you’re going unless

536
00:27:09.179 –> 00:27:14.220
you look at that top line I’ve now put

537
00:27:12.12 –> 00:27:18.000
my machine back to that naught point O

538
00:27:14.22 –> 00:27:20.220
two to try and demonstrate finally the

539
00:27:18.0 –> 00:27:21.550
difference between backlash and scanning

540
00:27:20.22 –> 00:27:25.960
offset

541
00:27:21.55 –> 00:27:30.930
scanning offset as it says only applies

542
00:27:25.96 –> 00:27:33.450
to scanning it doesn’t apply to cutting

543
00:27:30.93 –> 00:27:36.600
backlash can have an effect on scanning

544
00:27:33.45 –> 00:27:39.300
and it can confuse the scanning offset

545
00:27:36.6 –> 00:27:42.390
results that’s why you should check out

546
00:27:39.3 –> 00:27:45.270
the backlash before you attempt to do

547
00:27:42.39 –> 00:27:47.490
the scanning offset results but when it

548
00:27:45.27 –> 00:27:52.910
comes to cutting I’m going to show you

549
00:27:47.49 –> 00:27:52.910
something now if you millimeter circle

550
00:27:53.6 –> 00:28:01.179
doesn’t look very pretty does it we’ve

Transcript for Understanding Backlash and Scanning Reverse Interval (Cont…)

551
00:27:56.82 –> 00:28:03.399
got a weird something happening there

552
00:28:01.179 –> 00:28:07.269
and I did that at a hundred millimeters

553
00:28:03.399 –> 00:28:10.059
a second let me just move across and do

554
00:28:07.269 –> 00:28:13.169
the same thing again but at 400

555
00:28:10.059 –> 00:28:13.169
millimeters a second

556
00:28:14.99 –> 00:28:21.250
they both got exactly the same sort of

557
00:28:17.87 –> 00:28:25.630
shape to them here this really strange

558
00:28:21.25 –> 00:28:25.630
offset from one to the other

559
00:28:25.66 –> 00:28:31.610
now that circle there that 50 millimeter

560
00:28:28.79 –> 00:28:36.380
diameter circle there was done with a

561
00:28:31.61 –> 00:28:38.780
two millimeter backlash applied now I

562
00:28:36.38 –> 00:28:41.270
know that’s a stupid amount but I did it

563
00:28:38.78 –> 00:28:44.390
just to prove the point that that’s what

564
00:28:41.27 –> 00:28:47.030
you will get if you add backlash and

565
00:28:44.39 –> 00:28:50.450
you’re over enthusiastic but the other

566
00:28:47.03 –> 00:28:55.790
thing is the one beside it looks exactly

567
00:28:50.45 –> 00:28:58.370
the same but that’s done at 400

568
00:28:55.79 –> 00:29:00.800
millimeters a second and the point I

569
00:28:58.37 –> 00:29:03.550
wish to make there is that speed has no

570
00:29:00.8 –> 00:29:05.440
effect on this offset

571
00:29:03.55 –> 00:29:08.740
[Music]

572
00:29:05.44 –> 00:29:10.809
and finally we’ll go back

573
00:29:08.74 –> 00:29:13.600
and we’ll check out what the correct

574
00:29:10.809 –> 00:29:17.140
offset is point zero five for this

575
00:29:13.6 –> 00:29:18.730
machine so the start-finish point was

576
00:29:17.14 –> 00:29:22.750
there as you can see from the black mark

577
00:29:18.73 –> 00:29:24.850
and it lines up perfectly well hope that

578
00:29:22.75 –> 00:29:27.700
will keep you out of trouble if you ever

579
00:29:24.85 –> 00:29:31.090
do find that you’ve got mismatching cuts

580
00:29:27.7 –> 00:29:33.340
or scans that look vaguely round the

581
00:29:31.09 –> 00:29:35.890
edge so hopefully you’ve got a little

582
00:29:33.34 –> 00:29:38.620
bit of a clearer understanding now about

583
00:29:35.89 –> 00:29:43.299
the difference between backlash and the

584
00:29:38.62 –> 00:29:47.100
scanning reverse interval until the next

585
00:29:43.299 –> 00:29:47.100
time bye

Transcript for Understanding Backlash and Scanning Reverse Interval

What Next?

Did you enjoy this post? Why not check out some of our other posts:

Disclaimer

Last updated August 26, 2021

WEBSITE DISCLAIMER

The information provided by n-Deavor Limited, trading as Laseruser.com (“we,” “us” , or “our”) on (the “Site”) is for general informational purposes only. All information on the Site is provided in good faith, however we make no representation or warranty of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability or completeness of any information on the Site.

UNDER NO CIRCUMSTANCE SHALL WE HAVE ANY LIABILITY TO YOU FOR ANY LOSS OR DAMAGE OF ANY KIND INCURRED AS A RESULT OF THE USE OF THE SITE OR RELIANCE ON ANY INFORMATION PROVIDED ON THE SITE. YOUR USE OF THE SITE AND YOUR RELIANCE ON ANY INFORMATION ON THE SITE IS SOLELY AT YOUR OWN RISK.

The Site may contain (or you may be sent through the Site) links to other websites or content belonging to or originating from third parties or links to websites and features in banners or other advertising. Such external links are not investigated, monitored, or checked for accuracy, adequacy, validity, reliability, availability or completeness by us.

WE DO NOT WARRANT, ENDORSE, GUARANTEE, OR ASSUME RESPONSIBILITY FOR THE ACCURACY OR RELIABILITY OF ANY INFORMATION OFFERED BY THIRD-PARTY WEBSITES LINKED THROUGH THE SITE OR ANY WEBSITE OR FEATURE LINKED IN ANY BANNER OR OTHER ADVERTISING.
WE WILL NOT BE A PARTY TO OR IN ANY WAY BE RESPONSIBLE FOR MONITORING ANY TRANSACTION BETWEEN YOU AND THIRD-PARTY PROVIDERS OF PRODUCTS OR SERVICES.


AFFILIATES DISCLAIMER

The Site may contain links to affiliate websites, and we receive an affiliate commission for any purchases made by you on the affiliate website using such links. Our affiliates include the following:

  • makeCNC who provide Downloadable Patterns, Software, Hardware and other content for Laser Cutters, CNC Routers, Plasma, WaterJets, CNC Milling Machines, and other Robotic Tools. They also provide Pattern Files in PDF format for Scroll Saw Users. They are known for their Friendly and Efficient Customer Service and have a comprehensive back catalogue as well as continually providing New Patterns and Content.
  • Cloudray Laser: a world-leading laser parts and solutions provider, has established a whole series of laser product lines, range from CO2 engraving & cutting machine parts, fiber cutting machine parts and laser marking machine parts.
DMCA.com Protection Status Follow @laseruser_com