Do''s and Don''ts of Portable Bench Grinding Wheels | Norton ...
Do make sure the bench grinder has the proper wheel guard. Bench grinder guards should have side guards that cover the spindle, end nut, and flanges. It must cover 75% of the wheel''s diameter. Do make sure your bench grinder has an adjustable work rest that is kept adjusted to 1/8 inch or less from the wheel''s grinding face.