Lines are not perpendicular

Hi everyone,
i have a problem with perpendicular lines. When i cut simple rectangle the lines aren’t perpendicular.
The draw is a classic geometric form on illustrator.

the problem is always with also another files

attached image

do you have any ideas for solve the problem?!

Thank you!!!


This may help:


Really, Thank you so much.
I try immediately.

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Can’t tell much from the photo, but I did have a similar problem some time back and eventually discovered that the gantry was just a bit catywumpus. With the Glowforge completely turned off you can move the gantry to the very back and press each side so it is made parallel by the back wall. Then the head moved to the far left and turn the machine on again, If the gantry was the problem this should fix it.


I knew about gantry squaring due to other CNCs but I didn’t know :glowforge: had published a routine for it. Good on them.


Did the procedure that @rbtdanforth suggested resolve the issue for you? If you’re still experiencing trouble with lines not being perpendicular as designed, please let us know and we’ll be happy to help.

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Thank you everyone.
Yes, i solved the problem with your advice.


I’m glad you resolved it! I’m going to close this thread.

If you run into any other trouble, please start a new topic, or email us at We’re here to help!