08-04-2009, 11:16 AM
My last few sheets of styrene have come from old transit bus signs. They are 2' x 8', 0.060" ("sixty-thou") thick. They take a bit of washing up, and sometimes the vinyl lettering needs to be removed. But best of all, they are free! 
At 60-thou, they are a little thick for "fine" work, but they make great roads, parking lots, internal braces for large buildings, roofs, and so on.
So check with your local Transit Authority.
Andrew
At 60-thou, they are a little thick for "fine" work, but they make great roads, parking lots, internal braces for large buildings, roofs, and so on.
So check with your local Transit Authority.
Andrew