Die for barrel thread touch up?

[mram10]

Curious if a good 1-1/16 16un die could be used after threading a barrel to “true” it up. I’m new tomlathe and was hoping this could touch up my non perfect threads. Thanks

 

[Preacher]

Probably would work but it will follow your old threads, not cut new ones....

 

[rardoin]

Probably would work but it will follow your old threads, not cut new ones....

Certainly best to practice on stock and get your technique improved so as not to have to chase the threads. However, you can make or buy a thread chasing die, or 'die nut' to clean up threads. A standard thread cutting die will have a bit of taper, or 'leade' if you will, to start the die more true. This would leave several turns of threads untouched near the shoulder as the die bottoms out there. A chasing die has less taper and will clean up closer to the shoulder.

 

[ridgeway]

A thread repair file will work in a jiffy. Probably best to pick up and single point...

 

[GenePoole]

Don't take this the wrong way, but if your skills aren't up to making a better thread than a die, then you need more practice.

 

[Wirelessguy2005]

When I first started threading barrels my threads were not beautiful either, at the end of the day it didn't impact rifle accuracy one bit. It's nice to have a pretty thread but its purely an aesthetic thing.

 

[mram10]

Thanks guys. Read all the posts and it leads me back to practice. I’ll save the money and spend more time threading.

 

[ridgeway]

Do you have a machinist friend that is manual proficient to show you on your lathe. Hands on with a mentor is priceless...

 

[Cloudrepair]

One thing that came to me while reading this thread is in the few years I've been machining many jobs that where coming out real nice went bad from the part moving in the setup while machining because of less then ideal setup or wrong feeds and speeds.
Its good to check your part/work during machining steps.
Still running true, parallel to setup, concentric.

 

[Curious]

Curious if a good 1-1/16 16un die could be used after threading a barrel to “true” it up. I’m new tomlathe and was hoping this could touch up my non perfect threads. Thanks

I would look closer at why your threads are poor?

Are you grinding your own threading tool or using pre bought HSS or carbide inserts?

Getting a thread that is good enough to not need any remedial work isn't really a difficult task, I would concentrate on cutting better threads rather than finding ways to patch up bad ones. Trying to offer a big die like that to a barrel thread in a way that is remotely concentric will be harder than just cutting good threads.

 

[Shawnba67]

Certainly best to practice on stock and get your technique improved so as not to have to chase the threads. However, you can make or buy a thread chasing die, or 'die nut' to clean up threads. A standard thread cutting die will have a bit of taper, or 'leade' if you will, to start the die more true. This would leave several turns of threads untouched near the shoulder as the die bottoms out there. A chasing die has less taper and will clean up closer to the shoulder.

Once youve cut with the lead in turn the die over and run it up to the shoulder facing backwards.

 

[Dusty Stevens]

Once youve cut with the lead in turn the die over and run it up to the shoulder facing backwards.

Has anybody actually used a die to cut barrel threads?

 

[shortgrass]

Has anybody actually used a die to cut barrel threads?

I am sure someone has tried, Dusty. A few years ago I had a rifle come in that looked like the muzzle end had been threaded with a pipe threader (looked like 3/8" NPT). Couldn't find a brake that'd fit those threads, and wanted to know if I'd make one for him! I think the OP and others are just thinking about 'chasing' existing threads that are not 'right' or are incomplete. Threads don't have to be beautiful, but they need to be the right size, not too loose, not too tight,, and they need to be the proper shape, not tilted off to one side.

 

[accuracyman]

Based on the last picture posted of your threading efforts this is no longer needed You have made great strides in your threading efforts based upon the first few pics of your threading jobs. Good sharp tools along with a rigid repeatable setup and bottoming out the threading lever all make for nice threads. I'm glad you did not give up even though some were less than helpful. Keep threading, turning, and learning and anything is possible. Especially highly accurate custom barrels properly fitted to an action

 

[pat fulghum]

Nicholson thread files.

http://www.nicholsontool.com/files/sets/nicholson-t33024-thread-restoring-file-set-pouch.html

 

[STS]

Has anybody actually used a die to cut barrel threads?

I do it all the time. Then run the chamber reamer in with a cordless drill till I get purdy close then turn the reamer with a crescent wrench. Shoots goooood.

 

[Preacher]

I do it all the time. Then run the chamber reamer in with a cordless drill till I get purdy close then turn the reamer with a crescent wrench. Shoots goooood.

How fast can that cordless drill cut a chamber ???

 

[hoz53]

I do it all the time. Then run the chamber reamer in with a cordless drill till I get purdy close then turn the reamer with a crescent wrench. Shoots goooood.

do you file the shank down until the die will go no

 

[mrmarmota]

How about a geometric die head? With correct thread chasers of course. Don't have or ever done it. Just wondering.

 

[Eddie Harren]

This entire thread has been, "better'n the funny papers".