#MakingTools Ages ago I bought a DuMore handheld grinder with a large collection of 1/8” carbide grinding bits on Craigslist (like a Foredom tool without the flexible shaft). Made this sharp carbide punch with one I broke w/abrasive cylinders of different grits on drill press.
It’s very very hard, impressively sharp, and if used carefully can make little dimples in harder steel for starting holes. Also great for scratching lines in harder steel.
