But rather than toss a heavy-duty drill that had its handle broken ... When he built his magnetic vise, [Workshop From Scratch] used magnets pulled from automotive air conditioning systems.

Hole saws and small-bore annular cutters can be used with hand-held drills ... eject the slug after the hole is finished.” A magnetic drill is essentially a portable 120-volt drill press ...

[Workshop From Scratch] was faced with this problem, so he built a motorized magnetic track for his plasma ... and is powered by an old cordless drill with the handle cut off.