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Old 6th April 2013, 03:35 PM   #21
Magz is online now Magz  United States
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Quote:
Originally Posted by Jsixis View Post
1/8" I would definitely use a drill, punch would warp the box too much
I usually get little dimples in the Al or Cu right where the punch first cuts into the material when using a Greenlee punch, even with brand new punches. Are there any tips for avoiding those? I suppose I could use the punch so the cutting head is on the inside of the panel, but then I get scratches from the flat side of the punch contacting the plate.

Any pointers appreciated!
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Old 6th April 2013, 07:09 PM   #22
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I use masking tape to avoid the die marking the material, and lots of lubricant!
Too bad Greenlee does not supply their "Slug-Splitter" punches in anything other than conduit sizes! E
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Old 23rd April 2013, 12:24 AM   #23
Lavcat is offline Lavcat  United States
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Last night I finished machining my panel, it only took me about a year and a half. For the 15/16ths holes I used the Greenlee punch but for the 1/2 inch holes I drilled rather than punching.

Thanks, everyone, for the help.
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