I am looking for a sheet that measures out to either 3'x5' or 4'x6' (1/8 thick). Anyone know of anywhere I can get it cheap?
You'll have to go to a local plastic's retailer for that - check your Yellow Pages under Plastic - rods, sheets for a listing.
However, because of the way UHMW-PE is manufactured, it might be difficult to find 1/8 thick UHMW-PE. Depending on your application, you could go 1/4 thick or try substituting for HMW-PE. HMW-PE has similar properties, will still last a very long time, and be a little cheaper than UHMW-PE.
