Ever wished you could drill a square hole?

Joined Jul 18, 2013
24,991
Came across this, looks neat!

ericgibbs

Joined Jan 29, 2010
15,347
hi Max,
Have you ever watched on TV, 'This Old at House', presented by 'Norm'.?
E

Joined Jul 18, 2013
24,991
hi Max,
Have you ever watched on TV, 'This Old at House', presented by 'Norm'.?
E
Many moons ago. !

ericgibbs

Joined Jan 29, 2010
15,347
hi Max,
Those square hole drilling bits were used to build the 'Arc'.

E

Joined Jul 18, 2013
24,991
hi Max,
Those square hole drilling bits were used to build the 'Arc'.
I must have missed that boat!

drjohsmith

Joined Dec 13, 2021
381

You can drill a square hole with a three sided drill

MrSalts

Joined Apr 2, 2020
1,538

You can drill a square hole with a three sided drill
It really depends on one's definition of "square" since most people don't think a square hole needs to have the radius of the corners defined.

drjohsmith

Joined Dec 13, 2021
381
It really depends on one's definition of "square" since most people don't think a square hole needs to have the radius of the corners defined.
The video on utube shows the real square hole
it was just I know some don't like running u tube videos, so I included the simple link to the theory

Check it out,
you would not believe the racket the floating drill make
you can do same with a simple triangle drill by hand ,

I've seen it done in wood, but never in a hard metal,

Joined Jul 18, 2013
24,991
This does not seem to suffer that,?
Looks perfect and quiet.

shortbus

Joined Sep 30, 2009
9,322
I have one of those morticing attachments that belonged to my great granddad, he was a cabinent maker and died in 1963, and it was old then. The square part is made by a square chisel with the auger bit running down the center. So while it may be deemed a square hole drill, it actually only drills the round hole then the chisel makes it square.