Before staff gets here, there is one of two things most likely going on. One, and most likly, you have a weird little problem with the file. You can check this simply by printing something you have printed sucsesfuly before.
Second posibility is you have had a belt slip, if it is just a bit lose and there is no damage staff should be able to tell you how to tighten it up and all will be well.
Yeah, that looks like something mechanical. You need to inspect the belts, the wheels, and the tracks closely. Make sure there is no debris on any of it, and that the belts are fairly snug and clean. (Resin buildup on the beds and wheels can cause that to happen - the belts will start to slip.)
If you need to clean the belts and wheels, you can read through this post to someone with a similar issue:
I’m so sorry your print didn’t come out beautifully.
Can you try the following test for me:
Turn off your Glowforge.
Wait 30 seconds.
Turn your Glowforge back on.
Print the Gift of Good Measure using the default settings.
Place the design it as far to the right as possible
When the print finishes, leave the lid closed and wait until the fans stop and the picture updates. Without moving your artwork or your material, take a screenshot of the Workspace to show us the difference between the artwork placement and the actual print placement. Make sure to include the rulers in your screenshot and show as much of the bed as possible.
Mac: Press Shift-Command-4 and click and drag a box around your image. You’ll find the screenshot file saved on your desktop.
Windows: Click on the Start Menu and type “snipping tool”. Open the Snipping Tool > New then click and drag a box around your image. Click the Save icon and name and save your file.
Send us the screenshot along with the date and time of the print, and we’ll investigate.
I’m going to throw out a third option (because I’ve had this happen): You had the board either way forward (next to the front) or way to the right. In either case, the head bumped the wall and caused the shift.
I have tape on my crumb tray marking 1.25" from the front and 1" from the right. Those are head-bump zones – avoid them.
Hi Pip, thanks, and also thanks to dr.krawetz, markevans36301, and especially to Jules. Pip, everything is working fine now, so I’m going to forego your suggested steps for now.
Mark, you were correct that the X drive belt was the problem. I cleaned it following the instructions Jules linked to. Of course, I misread the instructions and also ended up partially detaching the right Y belt…
I’ve done several cuts and engraves since putting everything back together, and they’re coming out beautifully.