hi andre,
thanks for the reply! do you reckon fiberglass fabric would work? i can't imagine sticking a piece of fiberglass that looks like it came from a canoe on my disk
regarding open cell foam, what kinds do you think would work? i'm still figuring out where to get these materials, and whether it'd be the correct ones.
thankfully i was able to make more wooden disks so i can afford to do some experimentation!