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Cutting holes in metal

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Samstag:
Those circle cutters need a slow rotation rate and lots of patience on metal to prevent overheating.   They work great in a drill press.

mark shaker:
I agree with the Greenlee Punch.

You drill a sloppy pilot hole, assemble the punch *, and slowly tighten it with a ratchet. It will make a perfectly clean, perfectly round, precisely placed hole.

* It consists of 3 parts, a punch on one side of your stock, a die on the other side of your stock, and a bolt that connects the two through the pilot hole.

   - Mark

mmmPeanutButter:

--- Quote from: mark shaker on February 24, 2006, 08:27:57 am ---I agree with the Greenlee Punch.


--- End quote ---

I used the Greenlee punch on mine.  Amazing results.  And super easy and quick... 

...but what about the thickness?  3mm?  Seems really thick.  Anybody used a greenlee on something this thick?

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