Square Holes Drilled With A Watts Drill Blows My Mind
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 ]
Dremel 4000 Must Be Two Times Better than the Dremel 2000 [Tools]
Do-It-Yourself humans! Lust for the Dremel 4000—the magic rotating tool that can sand surfaces, carve wood, polish metal, scramble eggs, mix cocktails, and overstimulate naughty bits with different tips—for it’s the new king of the multifunction tool hill.
It has new replaceable motor with electronic feedback control, which in theory will give you consistent speed under pressure. The speed range goes from 5,000 to 35,000 revolutions per minute, and it has the obligatory backward compatibility with all your existing Dremel tips. [Dremel via ]
