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I Forge Iron

Piping an Eye Punch


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Nice vid, do you normalise before you finish grind, file and finish the end, seems in the sequence you normalised after this, can you clarify please.


John, I just let the punch cool slowly after forging and it's pretty soft. Then I do the final grinding and and finishing, normalize once or twice before hardening and tempering.
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I punched the end after shaping the punch, then ground to intent. I was rather not happy with how the punch upsetted while I was punching it (did that make sense?)

I may have to try this since it is a simple looking technique and appears to provide a better controlled rim.

Phil

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Phil, I know what you mean. I do the same thing, but leave the end a bit heavier than needed before punching. Then you can grind the excess off to the desired shape and size.

Usually when we're forging we're having a hard time not getting the piping action. Now we can use it!

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Great to see someone using a technique(pipeing) based on a result that most people only see as a negative. The use of pipeing to start the mandrel for DOM tubing is something they did back in the teens in industry. I don't know if this is still the process used.
Good video ciladog

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  • 2 weeks later...

thanks very much for the video. I've been scouring the forum for a week now trying to find a better way to accomplish this than the way I tried - driving a ball bearing into a punched spot on the face of the tool. I think this will be much better. Can't wait to try it.

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