This was one of the first posts I found when researching getting into laser engraving. It was very comforting to see all of things that were possible and it also helped to sell my wife on the idea. A general thank you to everyone at the Creek. All of this and more for $6. What a bargain! :D
Michael.
Tap Plastics has something called Acrylic Plus which is supposed to be twice as strong as regular acrylic. Iv'e never used it, but it may be what you're looking for.