MATERIALS SUITABLE FOR CUTTING WARNINGS
Many woods Avoid oily/resinous woods as they are prone to catching fire
Plywood/Composite woods  
Paper, card stock  
Cardboard, carton Watch for fire
Cork  
Acrylic/Lucite/Plexiglas/PMMA  
Thin Polycarbonate Sheeting (<1mm) Watch for smoking/burning
Coroplast (‘corrugated plastic’)  
HDPE Low melting point, watch for melting and fire
Delrin (POM) (thin)  
Kapton tape (Polyimide)  
Mylar Gold coated mylar will not work
Solid Styrene Keep it thin
Depron foam Must be constantly monitored
Gator foam Inbetween foam is eaten away, but it can be cut
Cloth/felt/hemp/cotton Not plastic coated or impregnated cloth!
Leather/Suede Real leather only!
Magnetic Sheet  
NON-CHLORINE-containing rubber  
Teflon (PTFE)  
Carbon fiber mats/weave that has not had epoxy applied You must not cut carbon fiber that has been coated!!
MATERIALS SUITABLE FOR ENGRAVING WARNINGS
All the materials that are cuttable are suitable for engraving as well  
HDPE Low melting point, engraving can be the cause of localized melting and a non-uniform surface
Ceramic tile  
Anodized aluminum  
Painted/coated metals  
Stone, Marble, Granite, Soapstone, Onyx  
Glass  
NEVER CUT THESE MATERIALS! DANGER
PVC, vinyl, pleather, artificial leather Emits pure chlorine gas when cut
Thick ( >1mm ) Polycarbonate/Lexan Cut very poorly, discolor, catch fire
ABS Emits cyanide gas and tends to melt
Milk bottle plastic Catches fire and melts
PolyStyrene Foam Catches fire
PolyPropylene Foam Catches fire
Fiberglass Emits fumes
Coated Carbon Fiber Emits noxious fumes
MDF/Engineered woods We do not have proper ventilation

Lists are adapted from this link