grinding gnists

abrasive accurate among analogous basements bits chip chips contexts contradistinction cranked cutting dimensions disk edge factory fields floor functions garages gnist grain grinddisk hand handtool industrial kinds knife labour lapping machine macroscopic manufacturing mass mentally metal negative operations point power practical precaution processes produce production rake recent safety safetyprecaution sanding shallow sharpening shears shop single steels stones subset term tool toolmaking variety various wheel wide worker