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How do you punch a square hole?

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XtraSmiley:

--- Quote from: Hoagie_one on March 09, 2005, 07:32:10 am ---
--- Quote from: paigeoliver on March 09, 2005, 01:05:54 am ---I normally just drill the holes round and then either bang the bolts down with a hammer or screw them until they go down flat.

--- End quote ---

use teh bolt to punch the square then....yeah, i'll prolly go that route

--- End quote ---

How big of a hole do you drill to do this?  Also, please post your results, with pics if possible.  I'm going to be doing this to a Space Duel CP soon and don't want to mess it up.  Thanks.

sodapopinski:
It depends on the thikness of the material. My last panel I ruined three hole saws, they were designed for steel, but it was thick. Regardless, I was able to pound the carriage bolts down and tighten. You should have no problem.

RayB:
If it's at all possible to cut an X then you will be able to tighten the bolt down into it creating a square.

jcrouse:
To answer your question, yes. There are square BROACHES. Any industrial supply house (machine shop supplier) will have access to them.

To offer my opinion, as an ex-tool and die maker, drill them round and then file out the corners with a tiny file. I did 12 holes (a cocktail with three cp's) in 1/16 metal cp's in about 15 minutes. It's very simple.

Good luck,
John

XtraSmiley:
Cool, thanks man!  Can you just hammer these into the hole?

http://mdmetric.com/dumont/prod3a.html

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