Posted by JK2 on August 31, 2016 at 00:36:47 from (166.137.90.119):
In Reply to: Square hole posted by cool hand on August 30, 2016 at 16:06:07:
For small diameter holes you can use a square broach in a press to make a round hole square. Visit this site to see some examples:
http://dumont.com/our-broaches/square-broaches/
I have a device that holds a 3 cornered rotary cutter vertical in the drill press while allowing it to move off center and cut the corners out on larger holes by following a pattern that is clamped to the piece that you are putting the hole in. It will also make a hex hole with a 5 sided cutter.
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