I'm building a light duty cutter/mill mostly vinyl cutting but some 1/8" plastic cutting also so I do mean light duty. I want to use 3/4 (od) inch "v" grove bearings for xy axis with the gantry weight not more than 10lbs with 4 bearings supporting the gantry weight. Can I get away using some kind of hardened aluminum ground to 90 degree for the "v" groove for the track for the steel v bearings? Should I go with steel tracks and forget aluminum?
Also I need some small pulleys for an "O" ring belt for a small spindle motor 4mm shaft. It seems all I can find are toothed pulleys.