Pretty common, I think. I've made clamps and rove punches for instance, and I've been tempted to make drill bits. (But this is for wooden boatbuilding, which is

Pretty common, I think. I've made clamps and rove punches for instance, and I've been tempted to make drill bits. (But this is for wooden boatbuilding, which is its own uniquely crotchety corner of carpentry. Not unlike emacs...)