I have a small home built tool and cutter grinder. I have been thinking about fitting it with diamond wheels, mostly to avoid all the dust from dressing conventional grinding wheels. I would appreciate other's experience on the following points:
- What grade of diamond grit do others use. It is mostly for putting an edge back on end mills and occasionally drills.
- I have been told that steel and diamond do not mix as the diamond will migrate into the steel, so use CBN wheels. Only one snag - the price. Is this diamond and steel thing actually real on a machine that gets used once every few months at 3000 rpm? I am no spring chicken and I don't think I am ever going to see my money back by buying CBN wheels! But if it is really needed, then I shall bite the bullet.
- I am running a 5" wheel at 3000 rpm if that is relevant. I would probably also have a 4" cup or saucer wheel.
- I already have a diamond impregnated cup wheel, but the grade of grit is super fine and it really doesn't cut. Quite good at polishing, though. I don't want to make that mistake again.