I tried cutting Glowforge proof grade leather and it didn’t cut all the way through. I cleaned all the optics and still didn’t have any luck. My material is sitting tight to the bottom tray. Not sure If I am missing some settings?
I had to use a knife to finish the cut. Engrave worked fine.
Because leather is natural material and no two hides are even,it is probably the piece. Just turn lower the speed with a few ideas and it should cut it just fine. I cute leather with mine i use vegetable tanned leather (none proof grade) but i use the settings for thick natural leather, and i even lower my power up to 67-70, and it works beautifull,i dont even need to use masking
Could you let me know about when that print was? I’d be more than happy to take a look at the logs for that print and see what I could find out.
Could you send a photo of the back of the print? That would help with my investigation.
If you’d like to verify your Glowforge is working as expected, you could try a test print on some other Proofgrade material. But if all your other cuts are working fine, it may just be an issue with that piece of material.