I have a project making new ballway cages for my surface grinder. My grinder doesn’t use balls it uses .750 cylindrical rollers that are about .700 long. Grinder has a V rail and a flat rail. I am wanting to make new cages for the new rollers I have made. Looking at McMaster their is a lot of different plastics. My question is what would be the best material to use. Needs to be durable, slippery, stiff, and last. Do I use garolite, acrylic, Teflon, uhmw polyethylene, delrin, idk?? Any thoughts.