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How to use punch holes in a metal cp

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horseboy:

Looks nice. Excellent work.  :applaud:

Paladin:

Thanks for the pics, I was wondering how those things work!

Those starter holes look huge, do they make a punch that allows a smaller diameter starter hole?  I don't need to make any extra holes right now, but when I do I didn't realize I would have to buy a new drill bit as well as a punch.


Ken Layton:

Yes, the pilot hole for the 1-1/8" (a.k.a. 3/4" Conduit) hole punch requires a 3/4" hole.

I have TWO Greenlee punches for doing the control panel holes: a punch that punches the 3/4" pilot hole (which in itself requires a 3/8" hole and I already have a 3/8" drill bit) and the 1-1/8" punch.

whammoed:


--- Quote from: Paladin on April 22, 2006, 08:43:01 am ---Thanks for the pics, I was wondering how those things work!

Those starter holes look huge, do they make a punch that allows a smaller diameter starter hole?  I don't need to make any extra holes right now, but when I do I didn't realize I would have to buy a new drill bit as well as a punch.


--- End quote ---
the greenlee radio chassis punches i have require only a 3/8" pilot hole for the punches around the 1 1/8" range.  Just depends on the model of punch I suppose.

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