drill SQUARE HOLES Japanese form tool

This will defy everything you KNOW! Triangle shaped formed tool will drill SQUARE HOLES.

Amazing concept, but from the sound of the impacting cut I'll bet the mill head is short lived. The square holes need to be roughed out first with an undersized drill bit. The offset triangular form tool doesn't appear to be able to plunge that fast, the video says 200 in/min.

One advantage this tool has is being able to make a very deep cut relative to a small corner radii. I also see a problem with keeping the square shape parallel to the sides of a workpiece.

Category:

Science & Technology

Tags:

• cnc
• Chinese
• drill
• bit
• mill
• machine
• machinist
• lathe
• square
• holes
• pocket
• Milling Machine
• Steel
• China
• Japanese
• form tool
• drill bit

[joejoe722]

If you actually decide to drill a square hole in your head, make sure you record it and post a video reply to this thread

[joejoe722]

Im not exactly sure, but probably something like +0.00-.002

[thejam200]

minecraft drill

[fo0g]

240p, we meet again

[chavzone]

Oh sweet, all we need now are square screws!

[MrMrBilko]

Very clever but how about triangular holes?

[mmmdeliciousbabies]

i think the way it workd is as opposed to you standard dril it isn't center so the center is more toward a tip of one side

[Tda7000]

@triftenC Well if you can get said 'special chuck' onto a standard mill then I suppose we're both right anyway ;)

[triftenC]

@Tda7000 Right you are. Point conceded. (Not sure if this phrase has ever been used in a Youtube comment.) The bit does need to orbit (if that's the right word).

[Tda7000]

@triftenC Well you do need at least a special chuck: "The Harry Watt square drill bit has the shape of a Reuleaux triangle and can, if mounted in a special chuck which allows for the bit not having a fixed centre of rotation, drill a hole that is nearly square."

[antonya1989]

like square vagina

[mrjingles77]

Finally, now I have a use for all those square screws I have laying around.

[triftenC]

@dos2cpp Nope, no special mill needed, just the offset triangular-ish bit is needed (and a solid grip on the workpiece). The corners of the square end up a little rounded. Look up Reuleaux triangle on Wolfram or wikipedia.