The pandemic has been hard on small suppliers, and the 
requirements are very specific.
If you’re looking for acrylic you can get that lots of places - just look for cast acrylic (extruded smells worse and doesn’t turn white when you engrave it).
Wood is harder, but there are also suppliers. Glowforge plywood has an mdf core, so if you are looking to duplicate that’s what you’re looking for.
You’ll need to mask things yourself, be sure to pick up something to rub it on with because masking is pressure activated (unlike masking tape)
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