In a thread about flattening warped material to the bed, and discussing the use of magnets, I got an official response of:
“Regarding the magnets, we don’t recommend putting anything in your Glowforge unless it’s laser-compatible. We recommend using small scraps of Proofgrade material if you need to weight down the edges of your material.”
Anyone know what they mean by this? (sent them a DM but no response yet) None of the proofgrade stuff I’ve got in the starter package is heavy enough to weigh anything down, especially not just a scrap of it.