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Drilling a square hole on a drill press!

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Forum topic by Dick, & Barb Cain posted 11-25-2011 05:12 AM 8773 views 0 times favorited 9 replies Add to Favorites Watch
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Dick, & Barb Cain

8693 posts in 3766 days


11-25-2011 05:12 AM

Topic tags/keywords: resource

This is interesting, this done in steel, but why not wood?

Drill a square hole.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1


9 replies so far

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Jim Bertelson

3965 posts in 2631 days


#1 posted 11-25-2011 08:13 AM

Pretty interesting, Dick. The chuck must be offset on a separately rotating sleeve….......or some such…......

Happy Thanksgiving….........hope you and yours are doing well…............

-- Jim, Anchorage Alaska

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able339

47 posts in 1842 days


#2 posted 11-25-2011 08:31 AM

It’s called a mortise.

-- TNJames

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doyoulikegumwood

384 posts in 3459 days


#3 posted 11-25-2011 08:36 AM

the bit is whats called a Corner Radius End Mill and it is mounted in corner radius chuck, which is then mounted to a ether a CNC or a mill if you look closely the chuck is making 50 or so micro movements every rev and turns out to be a very expensive way to make square hole in wood.

-- I buy tools so i can make more money,so ican buy more tools so I can work more, to make more money, so I can buy more tool, so I can work more

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Rick

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#4 posted 11-25-2011 09:05 AM

Oh Boy! If I get one of those, then I have to get rid of these and they cost me $155.00!!

-- Hope Everyone Is Doing Well! .... Best Regards: Rick

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Pete

17 posts in 1844 days


#5 posted 11-25-2011 02:03 PM

http://www.youtube.com/watch?v=L5AzbDJ7KYI has a clearer view of whats going on here, and maybe a way to have it on a portable drill? :D

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Grumpy

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#6 posted 11-27-2011 08:51 AM

I wish I had one of those Dick.

-- Grumpy - "Always look on the bright side of life"- Monty Python

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fussy

980 posts in 2518 days


#7 posted 11-27-2011 11:37 AM

Dick and Barb,

Go to Roy Underhill’s site and watch him do it with a breast drill, special bit, and a metal plate with a square hole in it. Drills perfectly square holes to match in a flash. Makes a little noise, is fun to watch, and was used over here in at least the 18th century.

Steve

-- Steve in KY. 44 years so far with my lovely bride. Think I'll keep her.

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Lee Barker

2170 posts in 2317 days


#8 posted 11-27-2011 04:19 PM

I recall seeing a piece in Popular Science/Mechanics 4 years ago or so, in the Tools, Wow, Gee Whiz section. It was done in a drill press; I don’t think a portable drill would work.

Low speed, and There You Are. Apparently there was no great need for square holes, because I haven’t seen one since.

Kindly,

Lee

-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

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Dick, & Barb Cain

8693 posts in 3766 days


#9 posted 11-27-2011 05:30 PM

I know this system isn’t very practical for woodworking, but it’s fun too see it working.

In ways it operates on the similar principal as the Wankel rotary engine that was popular back in the 60s, except the bit follows a different pattern

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

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