Wooo! Conker 3 finally made it!

Anyway, Calum is correct in all that, though it really wasn't cheap. I'd recommend 25mm HDPE. Its cheap, easy to source , easy to work with, it bounces and it doesn't shatter like Nylon. Nylon is the 'engineering' plastic but it doesn't fair well when struck. The base of Conker 1 was Nylon and it shattered in two!