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Forming tool punch?

Question asked by Tom Surette on Jun 19, 2014
Latest reply on Jun 19, 2014 by Steven Smith

I'm looking to make a keyhole punch tool for a PEM fastener that we use all the time.

 

I made a tool that looks like the 1st pic. The 1st cut side looks good, pic 2, but the back side forms around the opening.

 

Is there a way to stop this, and is using a forming tool the best approach for this?

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