That's pretty sweet! A few questions for you though:
What thickness of plexi did you use?
What temperature was the oven?
How long did you keep it in there for?
Another great product for Styrene and ABS is "Hot Stuff". You can find it pretty much at any Canadian hobby store. I'm in Calgary and get it from PMS. It comes in various thicknesses as well, from the watery runny stuff (green bottle) to really thick (red bottle). Each has its own purpose - the...