ciladog

Piping an Eye Punch

Recommended Posts

This video shows how I make eye punches for animal heads. I use a forging method called piping where the surface metal is pulled over the core. Enjoy.


Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites
Nice powerhammer fixture. Could you show the whole fixture and maybe describe it a wee bit?


David,

Take a look at this thread. It will show several versions of the taper tool. Should help before ciladog replies.

Brian P

Share this post


Link to post
Share on other sites

Isn't the initial result of what you are doing something some of us refer to as "fishmouth"? Seems to work great whatever it is - I'll try it soon.

Share this post


Link to post
Share on other sites

Nice video and great technique. I typically taper the stock, followed by normalizing then I chuck in the lathe, face off the tip and run a two flute ball mill into the end. Your way is a good blacksmithing method.

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

Isn't the initial result of what you are doing something some of us refer to as "fishmouth"? Seems to work great whatever it is - I'll try it soon.


I suppose you could call it a round fishmouth. But that would be an oxymoron.

Share this post


Link to post
Share on other sites

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!

Share this post


Link to post
Share on other sites

What was the metal you used? I think a piece of auto lug wrench would do .


Rusty, that was a piece of coil spring so I assume it was 5160.

Share this post


Link to post
Share on other sites

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.

Thanks for the clarification.

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

I tried this today. It is easy to get the piping action, but less easy to control the evenness of the lip that forms. I will need to revisit it after I grind the end off the punch I (poorly) made.

Thank you for the video.

Phil

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.