Ive done some searches and seen some nice homemade belt grinders. I would just buy one but its a hassle to get it here and a uncommen tool. Just wondering if anyone on here has built their own grinder and could give some pointers. My main concern is just safty. It is easy to get alluminum here and I have access to a big lathe for making wheels of any size, The wheels ive seen pictures of have a rubber surface, is this to help keep the belt on. I was wondering if Hmpv or High molecular plastic the white plastic stuff you make cutting boards out of would make good wheels? Do you think there is any bennifit to making a hollow grinder or flat grinder if you made it yourself?