Hello Jeff,
While the Unimat came with grinding wheels and they were originally intended for use on the Unimat itself, it is not a good practice to follow and I will explain why. When the grinding wheel is dressed or in other words is trued with a diamond dresser or dressing stick it spreads grinding grit over the entire machine. This grit can get onto everything and cause excessive wear on mating surfaces. If grinding must be done then cover all exposed surfaces with a protective tarp or piece of plastic.
If it was my machine I just would not grind on or near the Unimat period.
Dick
OldToolmaker