I use my 2 bench grinders A LOT,well 1 is a grinder and 1 is for polishing,and they make a mess,ecp the polisher,compound and buff threads everywhere.I polish manifolds on the side.I covered the wall behind said polisher with stainless but still can take hours to keep clean.With the building of my new shop I'm hopeing someone can show me a better idea.Inside some kind of box wont work because of the size of the parts being worked on.