Barrel replacement illustrated

Blastattack · 08-12-2012, 08:15 PM

Thank you very much! I very much like your setup and plan on copying it. Currently I'm in the process of designing and drawing up the tooling i will need for this project. The wrench is almost fully designed now

Concerning the dimensions for your receiver block; did you reverse engineer them from your receiver(s) or did you take them from a blueprint, and shrink them a few thou?

sheepherder · 12-14-2013, 10:52 PM

Quote:

Originally Posted by Blastattack

Concerning the dimensions for your receiver block; did you reverse engineer them from your receiver(s) or did you take them from a blueprint, and shrink them a few thou?

The former.

Edit: I've added some more inserts for the barrel vise, more ground drill blanks for the barrel reinforcements, and use a dial indicator for the taper. I replaced the Grade 8 bolts in the barrel vise with Grade 8 studs and nuts/washers.

A few of the two-piece inserts are for Nambu, Lahti, Mauser, and M1911/Star BM/Tokarev. The single-piece inserts are for rifles that I will never own (they came with the barrel vise).

Because different Luger barrel lengths have different tapers, I make my own inserts. I use 1 1/2" 6061-T6 aluminum rod bored to the specific taper of the 4, 6, 8 inch 9mm barrel; 30 cal 'pencil profile' uses different inserts.

I reinforce the bore with ground steel rods [drill blanks]. If you don't reinforce the bore, it will squish.

Figuring the taper for the odd insert is easy. I mount the barrel between centers and mount a dial indicator on my compound rest. I run the dial indicator along the barrel taper and adjust the compound rest until I get zero along the entire length of the taper. Tighten down the compound rest & tool post, drill out the chunk of aluminum rod to about 7/16", then bore the taper using the compound rest travel. Perfect taper for that barrel.

ithacaartist · 05-24-2015, 11:22 PM

Quote:

Originally Posted by sheepherder

I reinforce the bore with ground steel rods [drill blanks]. If you don't reinforce the bore, it will squish.

If it did not, G.T. would be unable to remedy those bulges!

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

08-12-2012, 08:15 PM	#1
Blastattack User Join Date: Aug 2010 Location: Calgary AB Posts: 44 Thanks: 8 Thanked 8 Times in 8 Posts	Thank you very much! I very much like your setup and plan on copying it. Currently I'm in the process of designing and drawing up the tooling i will need for this project. The wrench is almost fully designed now Concerning the dimensions for your receiver block; did you reverse engineer them from your receiver(s) or did you take them from a blueprint, and shrink them a few thou?