Why is my new glowforge cutting wavy lines?

I have only had my glowforge for about a month and randomly it doesn’t cut a straight horizontal line in this project. It is clear acrylic and only happens once in awhile. What could be the problem?

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Broken carriage wheel.

Remove the laser head and inspect the wheels that ride on the gantry.

First steps on the air assist fan service show how to remove the head:


Check the wheels on your laser head carriage. Chances are you have a broken one.

Edit: @eflyguy beat me to it lol.


Hello @rubyandedie1! I see that you’ve also sent us an email regarding this issue, and we’ve responded to you there, so I’m going to close this thread.