uses of a shapiung machine, produce a flat mirror like surface, cut gears, racks, splines and keyways, cut slots, vees and dovetails for slides etc etc, and all with a lump of hand ground HSS. Or you could use a milling machine to do it quicker, after spending hundreds of pounds on tooling to do each job. Not fast, but very versatile, cheap to buy (comparitively!) and cheap to run. I have an Alba New 1A 11".