Thanks, yeah I think I will be going with stripper springs on the guide posts and a stripper plate mounted to the top of the die.

Thanks! Yeah, I finally got an air cleaner in the shop.

What are loner pins?

@@craigsmachineshop2040 You can use hardened shafting and cut them to the length you need to go through the two blocks. McMaster Carr has shafting and longer dowel pins.

Thanks, yeah it's turning out to be easier than I thought.

Thanks! I always enjoy finding a faster or less expensive way of doing things.

Cool. If you ever find yourself needing a bit more tonnage, it’s possible to reduce the tonnage required by adding a “rooftop” or inverted rooftop angle profile to the punch face. Of course it will tend to deform the part slightly which may be undesirable. Depends on how steep you make it. 1 or 2 degrees might be enough to help yet not deform the part. Just something to consider...

Thanks Daniel. Yeah, I should have tried that on this die. I'm kind of afraid to on the real die set in case the holes aren't accurate and I can't get the pins out. Lol. I was planning on attaching the pins to the base plate with screws from the bottom.

I was thinking about making the punch concave but that's a lot of 3D machining of tool steel. Any idea of percentage of tonnage saved?

@@craigsmachineshop2040 it looks like you got pretty good alignment on this one, if you want to make this one into a press on the core side just take a ball bearing larger the the hole diamater, put it on the hole and hit it a couple times with a hammer, the pin will press right in

Tricks of the trade huh. :) I'll have to give it a try, thanks!

Thanks Bruce! How is that typically done, with a taper endmill?

@@craigsmachineshop2040When machining the relief, set the part at an angle and use a conventional end mill. Another way and maybe much easier with a CNC is to step mill the taper in increments from the bottom side of the die cavity. Yet another method would involve a hand grinder. Years ago I used the above methods except I didn't have access to the CNC so I manually set different depths of cuts to form a rough tapper in the relief. I hope this gives you some ideas you can implement into your design if needed.

Thanks for thg he tips.

Thanks!

Thanks David. The overall clearance between the die and the punch was about .014, or about .007 from edge to edge. The punch was .375 thick and the die from face to cavity was .125. So I had an extra .250 to push the blank into the cavity.

​@@craigsmachineshop2040 hi Craig, Really great video! I do have a question. Could you not just do it in cad and laser cut it? I am probably oversimplifying it I imagine. Thanks again for the video. Regards, Simon.

@@simon9447 Thanks! Laser-cutting machines are extremely expensive and the lead time for laser cutting is too long. Punching them is actually far faster and cheaper once you have the equipment.

Thanks!

Thanks Roy!

I make specialty electrical covers.

It was just a test set. It was mild steel unhardened. I do have the final die set now. I think it was D2 hardened. Not sure what Rockwell. I made the overall die set and outsourced the hardened parts.

It's a screw hole.

It was just a test die set. I used cold-rolled steel and didn't harden it. Cut pretty well though huh. I will be making the final dies out of A2 and farm out the hardening and tempering. They will be used in production.

I was trying to figure how to do it but I recently realized that I can machine it and then just put some precision shims under the parallels. I will give it a try. What do you think?

Hi Matthew. Just what's on my channel.

Thanks Henry!

@@craigsmachineshop2040 You're quite welcome Craig!

@@craigsmachineshop2040 hi Craig nicely done, where are you based,whats your whatsapp number

@@aswellmakando1724 Thanks, Phoenix Arizona. What is WhatsApp

@@craigsmachineshop2040 WhatsApp is an app on the phone it's one of cheapest communication system u can download it from play store on your

Thanks, about $9K with shipping

Thanks for the reply. I really appreciate your time . Do they ship to West Africa.

@@hansbeamer5725 Not sure, check with Tormach

Thanks! Sam at CNC4XR7 has converted a Precision Mathews and he does really well with it.

Thanks!

Unipunch has a calculator. www.unipunch.com/support/calculators/tonnage-calculator/

Aluminum would be too soft.

Most tool and die are milled and tool steel which is heat treated after milling, then ground.

No, carbide endmills will cut steel, stainless steel, tool steel...

@@craigsmachineshop2040 soft carbide alloys.

@@craigsmachineshop2040 soft carbide alloys.

20 ton

@@craigsmachineshop2040 thanks

1018 Cold Rolled Steel

@@craigsmachineshop2040 thank you Sir much appreciated 👍

Sorry, I only make tooling for in-house use.

Yeah, one of these days I will get back to making it.