ive got a small selection of the uhmw...[its basically plastic]...ive got several sizes of round and some flat sheets...if I ever need any its just a click away at McMaster carr...order one day..get it the next...they've got a bunch to chose from..what i used is the antistatic uhmw rods ...mainly because its black...heres a link for anybody interested....
https://www.mcmaster.com/#uhmw-polyethylene/=1bgov2k