Plexiglas vs Lexan https://www.acplasticsinc.com/informationcenter/r/lexan-vs-acrylicIs there a certain type of Plexiglas I want? One that cuts and drills without cracking?
I have drilled a lot of acrylic... I have found brad point wood drill bits work best for me. I don't think I have ever cracked acrylic with brad point bits even when drilling close to the edge unlike chisel point bits,Especially for drilling Plexiglass you need to grind a bit so it can't grab I.E. backwards or neutral cutting edge. Lexan not quite so grabby. Drill for good clearance with fastener.
Actually polycarbonate (Lexan ,etc) scratches much easier than acrylic (Plexiglas, etc.). Eyeglasses have a scratch resistant coating applied to them.Polycarbonate is used in eye glasses and will be much more scratch resistant than acrylic. I