On Thu, 19 Sep 2013 04:38:37 -0700 (PDT), PCS
wrote:
On Thursday, September 19, 2013 6:18:44 AM UTC-4, Karl Townsend wrote:
I just bought a rifling button so I can make my own 9mm barrels
http://tinyurl.com/kdn8mzg
You need a five ton press to push this button down a barrel to form
the rifling. OK, what would be the highest strength steel i can get
for the pusher. I looked for HSS and couldn't find anything long
enough. looked for already hardened drill rod. It must be out there
but no joy so far.
My first barrels will be 12", want to do 16" in the future.
Karl
Hi,
Would a solid carbide bar work as a pusher?
5/16" by 12" sold here for instance:
http://centennialcarbide.com/product...ng-micrograin/
This is why pulling buttons is preferred of course.
Didn't you say you were doing the gun drilling on a Hardinge CNC?
If so, don't they have a max of 12" in Z axis travel?
How's that all going to work out?
G'luck,
Thanks for the carbide lead. A push button was in my (super cheapo)
price range.
I'm going to modify a turret plate with a 1.375 square by real long
gundrill tool holder. Drill 12", back up and stop. Loosen holder,
slide ahead, restart drilling. I'd use a manual lathe but the hardinge
has a nice flood coolant setup and complete enclosure.
Karl