Do you know any good substitutes for Worbla thermoplastic that works just as good and can be bought at any hardware store?

aicosu:

SINTRA is a great material, and while its not bought at most hardware stoes – you can contact you rlocal Sign Making print stores. They throw out used sintra ALL THE time from incorrect print jobs and such, and you can usually pick up a batch of their scraps for free!!! 

Wow! Thank you!