Hi @JasonMarshall thanks for joining the community forum and sharing your concern!
We can work around some of the glass cracking issues by processing glass with the following two things:
- placing thin (rubber sliver around the perimeter of the pane of glass) so that the 1-2mm of bed movement that happens during a cut or the bowing doesn’t result in a fracture.
- placing rubber washers under the head of the fixturing screws to give compliance and not allow a piece of abrasive to create a pressure point on the glass
The following items have been tested in-house on multiple glass sheets and have had great success in order to produce glass cut-outs without too much concern for the bed warping.
- Plastic Fasteners here (100pcs for $10)
- Rubber material for placing under glass around perimeter to ensure no stress spots (like bowed, uneven cutting bed). Cut some 1/2"-1" wide strips from this material and place it under the edges of the glass as it makes fastening a lot less stress-inducing
- For washers these seem to be working better for us on really fragile things like thin glass: Mcmaster-Carr # 90130A013
There are even some community made 3D printed washers and other recommendations found in this post! (Link)