

By Andrew Liszewski

Make has a link to a pretty interesting discussion on the ‘The Home Shop Machinist & Machinist’s Workshop BBS’ about using a Watts or Reuleaux drill to make a square hole.

Now the idea of using a spinning drill bit to create a square hole is kind of counter-intuitive, but the animation on the right, while not exactly what a Watts drill looks like, helps you wrap your head around the concept.

And if you find yourself amazed at this new innovation in machining, you might also be surprised to learn that the idea isn’t a new one, and Harry J. Watts, for whom the drill is named after, actually received a patent (#1,241,176) for it on September 25, 1917.

[ The Home Shop Machinist & Machinist’s Workshop BBS – How do I make a square hole ] VIA [ Make ]