Hydro Brass Forming

slimjim · Posted: Tue Aug 06, 2013 6:17 pm Post subject: Hydro Brass Forming

bulletin.accurateshoot...-form-die/

Have you wildcat reloading nuts seen this?

DallanC · Site Admin Joined: Jan 18, 2005 Posts: 3572 Location: Utah

That's really cool. I always figured the factory has been doing this for a while? The automotive industry has been using hydro forming of sheetmetal for doors and fenders for quite a while now. Very useful technology.

I wonder how the plunger seal is on the die... I would expect some water to come squirting back out the top.

You guys seen the emergency fire starters that work similarly? A rapid compression of air ignites a tinder used to start a fire.

-DallanC

gelandangan · Posted: Tue Aug 06, 2013 8:18 pm Post subject: Re: Hydro Brass Forming

Great idea..
The mechanic side of my brain (a very tiny side of a tiny brain Razz

) think that this die would be very easy to make starting with a standard sizing die, and a threaded plunger cylinder to fit the usual decapping pin hole.

PaulS · Posted: Tue Aug 06, 2013 10:45 pm Post subject: Re: Hydro Brass Forming

gelandangan wrote:

Great idea..
The mechanic side of my brain (a very tiny side of a tiny brain Razz

) think that this die would be very easy to make starting with a standard sizing die, and a threaded plunger cylinder to fit the usual decapping pin hole.

The two hard parts would be the shell holder - you could tap it and use a set-screw ground flat; and the tight fit for the plunger rod through the bushing that would replace the neck expander plunger and decapper. The snugger the fit the less water would leak out. O-ring seals wouldn't hold the pressure and it might be hard to find a seal that small that would. Maybe a small enough "poly-packing" would be available but even they only hold up to about 3500 psi. I would estimate the pressures to be three times that.

I don't use anything that needs that kind of case forming. My wildcats are all just neck up or down.

Suzanne · Posted: Wed Aug 07, 2013 6:43 pm Post subject: Re: Hydro Brass Forming

I saw a video of a guy using water pressure like that to remove Berdan primers. He filled the case with water, placed a dowel into the case sitting on a wooden block with a hole for the primer to escape, whacked it and the primer easily came out. I get the wax out of my ears the same way, fill up one side with water and a clothes pin on my nose, stick a bic pen in my ear and whack it with a rolling pin. Wax migrates to the other ear and so if you're bent over the sink you clean two ears at once. It's a bit tricky to get the bic pen outa my head....sometimes a good sneeze works.

slimjim · Posted: Wed Aug 07, 2013 7:20 pm Post subject: Re: Hydro Brass Forming

LOL, LOL, LOL, LOL, clothes pin to plug the nostrils, LOL!!! Thanks, Suz!!!

PaulS · Posted: Thu Aug 08, 2013 9:03 pm Post subject: Re: Hydro Brass Forming

Suz! don't say things like that, some blonde will go home and try it...

you made me cry from laughing so hard!