Hello,
I haved used lightburn for 2 Years, but now I think I might have a Problem. In Lightburn I have a form with 4 right angles. When I laser it only 1 edge is in the right angle. The other 3 are offset.
The starting Point is lower left. The one with the right angle is the lower right.
I’m not sure if I pushed a buttton to offset only one side. I 'm sure it is not a hardware Problem because I bought a new Laser and everything is in the right angle. Is there someone who can help me?
On a piece of cardboard mark a 200mm x 200mm square. Measure it across and see if it is actually 200mm in both directions, also measure the diagonals. They should be the same both ways. If any of these dimensions are incorrect, you have a mechanical or calibration issue.
In Lightburn I made a 20 x 20 cm square. But it is 20 x 22 cm so I’m very perplexed. The one that goes to the right mad the square 2 cm longer. I added the photos.
That means something is wrong in your settings. Start by typing $$ in the console window and pressingenter key. Copy and paste all the output here.
Also, when posting screenshots, please use an actual screenshot rather than a phone photo. The glare makes it hard to read. Photos of your work are fine of course.
Perhaps Rotary Mode is (inadvertently) enabled:
The indicator is hidden in the screenshots, but it’s easy to turn on by accident:
$$
$0=10
$1=25
$2=0
$3=0
$4=0
$5=1
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=3
$24=300.000
$25=3000.000
$26=250.000
$27=1.000
$30=1000.000
$31=1000.000
$32=1
$37=0
$100=88.000
$101=80.000
$102=80.000
$103=100.000
$104=100.000
$105=100.000
$110=6000.000
$111=6000.000
$112=6000.000
$113=1000.000
$114=1000.000
$115=1000.000
$120=1000.000
$121=1000.000
$122=1000.000
$123=200.000
$124=200.000
$125=200.000
$130=410.000
$131=400.000
$132=200.000
$133=300.000
$134=300.000
$135=300.000
So here it is. Next time I will be making a screenshot. The main thing that I wanted to show was seen fine in the photo. So I thought it would be okay for this purpose.
Hey Thank you for the Notice. But it seems that I have an older version of Lightburn and there is no Mode for Rotary Mode. I can’t find it under Windows.
Could you take your reference square and check that your laser hardware itself is square? I know you stated that you got a new laser, but I strongly suspect that either your gantry/frame is not square, or your belt is loose on one side.
Yes I checked each corner with a Set square. (I hope it’s the right term. English is my second language) Everything is in the right angle.
I believe this is your issue. Typically these values are the same. They are steps per mm for your stepper motors. This would explain one axis being off 10%.
In console type $100=80 and press enter. Type $$ enter and verify the change. That should solve your issue. Please report back that it worked.
Just a pet peeve of mine. I always include the how to link because I know many people don’t know how to take one. A year ago, I didn’t know how.
Look for Laser Tools → Rotary Setup.
There’s a switch in Edit → Settings → Display turning on the Rotary Enable toggle, located perilously close to the Home button in the Laser window where everybody accidentally clicks it.
Especially when you don’t have a rotary, it’ll getcha. 
In this case, though, it looks like @thelmuth figured out the real problem.
So I did change the Setting like you suggested. And now it is at least 20 x 20cm, but there is only one right angle and die diagonale is off 0,5cm. I made some photos of the square.
And it’s okay with the screenshot. 
I found this option and I tried activating it. I made a bigger square but it ran straight into the upper and lower frame even though it was only 30 x 30cm. So I turned it off again.
None of your pictures appear to be a right angle. One is slightly wide the other is narrow. That indicates that your gantry is not quite square. This is a good guide to adjusting your machine. It’s written for sculpfun but most brands are very similar.
Thank you Helmuth. This is the first tutorial that helped with the belts. The tilt test is easy to understand and helped a lot. If I could ask you one more thing. I have this wobbly lines when he is going right and left. I heard that the cause might be that it is running to fast. My setting is 4000 mm/m to 85 % Power. I am working with bamboo wood. I even looked at the tutorial with the eccentric nut, after adjusting still wobble lines. I just want to get an opinion from you if I should go slower and lower the laser output. If that is possible.
Could be a loose mounting of the laser head on the trolley. Also make sure the gantry and trolley (if it has them) wheels are snug on the rails.
I just saw that I did write it wrong I already have the mm/min.
4,000 mm/min is not an excessive speed. Is it wobbly the entire length of the axis or just for a small area at the start of each line?
