Threading barrels....

[kapkanimd]

Hey guys,

I am in need of getting my 90-2 and a .22 rifle threaded (both 1/2x28).. I am wondering if in an effort to avoid paying $80 each and/or waiting months, how hard would it be and what is the process of doing the threads myself. My friend's dad has a new lathe. I am not sure of the details of it yet, but I think he can program using CAD. (not sure if that is beneficial in this situation). Anyhow, is there any particular reason not to try this ourselves given we follow instructions and know the risk? It would be nice to have a go to place to get barrels threaded and even offer it to others later if it works. So my next questions would be, is there a place I can find instructions, a list of what items are needed (brass cones for crown, type of cutters, etc), and any advice you might have? I have seen videos on youtube just none that are instructional. Thanks in advance.

Keith

[zevdogs]

It's easy just turn the diameter to .500 and make sure it's concentric to the bore and use a die to thred it
http://bit.ly/UDUZK5
I doo them all the time .. A little 15 minute job goes for around 100.00

[Historian]

It's easy just turn the diameter to .500 and make sure it's concentric to the bore and use a die to thred it
http://bit.ly/UDUZK5
I doo them all the time .. A little 15 minute job goes for around 100.00

Excuse my ignorance but if you have a lathe to turn down the barrel why would you not
use the lathe to accurately cut the thread instead of using a die.

E.g., << http://www.youtube.com/watch?v=fSzXNlQ97VI >>

When I have used a die to perform simple threading I placed the die into a tail stock die
holder and used the tail stock to keep things lined up.

<< http://www.projectsinmetal.com/new-proj ... -1-5-dies/ >>

<< http://www.practicalmachinist.com/vb/ge ... ck-217252/ >>

Otherwise images of Red Jacket and Will threading/butchering a barrel percolated into my head.

Confused.

[Enfield577]

It's easy just turn the diameter to .500 and make sure it's concentric to the bore and use a die to thred it
http://bit.ly/UDUZK5
I doo them all the time .. A little 15 minute job goes for around 100.00

Excuse my ignorance but if you have a lathe to turn down the barrel why would you not
use the lathe to accurately cut the thread instead of using a die.

E.g., << http://www.youtube.com/watch?v=fSzXNlQ97VI >>

When I have used a die to perform simple threading I placed the die into a tail stock die
holder and used the tail stock to keep things lined up.

<< http://www.projectsinmetal.com/new-proj ... -1-5-dies/ >>

<< http://www.practicalmachinist.com/vb/ge ... ck-217252/ >>

Otherwise images of Red Jacket and Will threading/butchering a barrel percolated into my head.

Confused.

I would tend to agree with this and I have threaded a good few barrels with no problems

[zevdogs]

It's easy just turn the diameter to .500 and make sure it's concentric to the bore and use a die to thred it
http://bit.ly/UDUZK5
I doo them all the time .. A little 15 minute job goes for around 100.00

Excuse my ignorance but if you have a lathe to turn down the barrel why would you not
use the lathe to accurately cut the thread instead of using a die.

E.g., << http://www.youtube.com/watch?v=fSzXNlQ97VI >>

When I have used a die to perform simple threading I placed the die into a tail stock die
holder and used the tail stock to keep things lined up.

<< http://www.projectsinmetal.com/new-proj ... -1-5-dies/ >>

<< http://www.practicalmachinist.com/vb/ge ... ck-217252/ >>

Otherwise images of Red Jacket and Will threading/butchering a barrel percolated into my head.

Confused.

Well if you have the capabilities use the machine of course but when you say your monkeys uncles sisters brother has a lathe.. .. Lol
Im just saying thears nothing wrong with a good die and if you use your tail stock to keep the die lined up its a easy reliable way
My idea was they wear turning barrel to size on the lathe but didn't want to single point the threads
Taps and dies are used reliably by thousands of machinist every day

[Historian]

Zevdogs has a point with his quotation:

"Taps and dies are used reliably by thousands of machinist every day".
As a machinist wanna-be I have done so for over 50 years ... but
never when criticality is demanded. I defer to master tool and die makers
among us whose skills I admire ... and happily envy.

In the context of this Smithing Forum the mating of barrel/can within very close
tolerances is the crucial issue to ensure that you are not going to blow the tube down range
along with possibly taking a limb out. Even a cursory reading of past posts on baffle
strikes from commercially made cans due to misalignment gives amateur me, at least,
trepidations. Especially as I have had a commercially made barrel by a supposedly
top manufacturer blow its barrel after firing less than 30 rounds. OOPS!

I do not intend to give offense. I just want to alert any member who is not as super trained as many here
the real dangers involved. Bad threading on galvanized ballet barre parts
does not have the impact as on parts that will experience the effects of 50,000 psi gases.

[Capt. Link.]

zevdogs I have always held your work in high esteem its super clean, next I'm going to hear the Easter bunny not coming.

[SRM]

Indicate the bore and make sure the last three to four inches are as strait possible as that is what dictates the bullets path.
Cut the thread single tool and use the three wire method. Good luck bro!

[bakerjw]

If you have the barrel chucked in a lathe and it has been properly indexed so that it is concentric to the bore then the hard work is done. Why wouldn't you single point cut the thread then? IMHO running a die on it is a risky proposition at best and really a Red Jacket method.

One thing that you can do is, single point cut the thread a bit larger than desired and then chase them with a die to bring it to dimension. The die will follow the exiting thread path.

Other than that, practice practice practice.

[SRM]

Well put there Baker. That's one of the tricks but be carefull as I've found not all dies are square.

[kapkanimd]

thanks guys for all the replies and advice.. I saw the 'lathe' today, and it is not at all what I expected and no good for threading barrels.. I either need to keep searching for another local place that will do it or look more into using a die.. If I were to use a die, aren't their alignment tools that go down the barrel to assist with alignment?

[kapkanimd]

I came across these after watching a youtube video.. The site 'CNC warrior' sell these dies with alignment adapters for different size calibers.

Here is the die:
http://www.cncwarrior.com/ProductDetail ... Code=23356

Here is the 9mm adapter:
http://www.cncwarrior.com/ProductDetail ... Code=24535

Here is the .22 adapter:
http://www.cncwarrior.com/ProductDetail ... Code=24316

First, I am not sure how to tell which die to purchase. I know 1/2x28, but what is the difference in the classes of threads? Also, I know AAC has their recommended thread specs and what are the changes that doing this method will come even close to them?

Second, it was mentioned using a lathe to cut the barrel down to .500. Is there anyway to do this without a lathe or is it necessary? EDIT: I found this on their website, pretty informative about the process and discusses the major diameter for barrel threading:
http://www.cncwarrior.com/v/vspfiles/Ba ... eading.pdf

Thanks again!

[zevdogs]

zevdogs I have always held your work in high esteem its super clean, next I'm going to hear the Easter bunny not coming.

Thanks.... Lol for the record dial in the barrel and single point is the best way but taps and Dias are a tool..... just like shaving with an open blade is very easy if your experienced enough but you can sure cut your own throat if you don't know what your doing

[Historian]

zevdogs I have always held your work in high esteem its super clean, next I'm going to hear the Easter bunny not coming.

Thanks.... Lol for the record dial in the barrel and single point is the best way but taps and Dias are a tool.....just like shaving with an open blade is very easy if your experienced enough but you can sure cut your own throat if you don't know what your doing

Forcefully and effectively conveyed.

Under the heading "Trimming for Trim":

One could extend the metaphor of the dangers awaiting the inexperienced
by taking on a job with dangerous tools:

<< http://www.askmen.com/dating/love_tip_1 ... e_tip.html >>

Hope loony leftists use straight razors.

[mollinst]

"Under the heading "Trimming for Trim""

Historian, shouldn't that be "Trimming for Quim"?

[kapkanimd]

haha, not to interrupt, but does anybody think these dies with alignment tools would work? I would try it on the cheap .22 rifle first and if it checks out give it a go on the 90-2....

[CMV]

I have one of those threaded alignment tools that go into the end of the barrel. Used it to thread a .22 barrel & it came out nicely. Still have to use the lathe to get the part you want to thread to the right size though.

[kapkanimd]

I have one of those threaded alignment tools that go into the end of the barrel. Used it to thread a .22 barrel & it came out nicely. Still have to use the lathe to get the part you want to thread to the right size though.

are you referring to using the lathe to reduce the outer diameter to prep for threading?

[CMV]

yes - you still have to turn down the barrel to the thread major diameter. That's why everyone is saying since you're already that far, single point thread it. I get nicer threads with a die & the barrels I've done after that first one I've still chased with a die afterwards.

[Historian]

"Under the heading "Trimming for Trim""

Historian, shouldn't that be "Trimming for Quim"?

Excellent observation, Sir.

American 'Trim" <=> British 'Quim'.
At least in Southie long before it got gentrified.

Either way, like potato chips, bet .....
Yum.

And daily thanks to the Good Captain for his delightful icon.

Seriously, let us get back to our main interest here, cans ( OK, including Jennifer Lopez* in a black leather skirt).

Best.


* See her in the movie "Out of Sight" and dare you to tell me that it does not effect your 'aim'.

[Capt. Link.]

I knew a boy down south that called it cock.The first time
he got all dressed up to go out and said I'm going to get
me some cock, me and his other room mate almost tossed
him from the 6th floor.

kapkanimd reading this thread its plain to see that you
need to seek help from a person that is intimate with
this job.Either a pro or enthusiast.I have always made
it a point to re-cut the muzzle crown whenever I thread
as your set up for it.You should find a like minded individual.

:As far as my avatar could you retire the breasts that a
thousand prick's salute each morning......God bless.


When being bad was so good


Who can name this gal: Her movies are known world wide.



She got me into the swing of things.

( Her co stars relatives still live out side of Jacksonville FL)

Tell me when that Homer moment hits you in the forehead.

[Historian]

I knew a boy down south that called it cock.The first time
he got all dressed up to go out and said I'm going to get
me some cock, me and his other room mate almost tossed
him from the 6th floor.

kapkanimd reading this thread its plain to see that you
need to seek help from a person that is intimate with
this job.Either a pro or enthusiast.I have always made
it a point to preform a muzzle crown whenever I thread
as your set up for it.You should find a like minded individual.

:As far as my avatar could you retire the breasts that a
thousand prick's salute each morning......God bless.


When being bad was so good


Who can name this gal:



She got me into the swing of things.

My guess: Paulette Goddard.

How close?

As for Jane Russell above, it was in this Howard Hughes movie that he adopted
aircraft engineering to make a super cantilevered brassiere ( she said it was painful
for her to wear ) for her to show off her gifts.

The movies of the 1940's left an indelible mark on many a young man's mind
on what feminine beauty was, e.g., Hedy Lamar, Jean Simmons, and of course
Vivian Leigh. Some have even been blessed with marrying their 'Vivian Leigh' dream girl.

[Fulmen]

Thanks.... Lol for the record dial in the barrel and single point is the best way but taps and Dias are a tool..... just like shaving with an open blade is very easy if your experienced enough but you can sure cut your own throat if you don't know what your doing

There are uses for taps and dies, especially for taps where it's hard to measure dimensions properly. But they are cheap tools for cheap work, especially for muzzle work where the added strain can affect the internal dimensions of the muzzle. Single pointing to ~90-95% will be the best compromise.

[kapkanimd]

I ordered the 2 alignment tools (.22 and 9mm). I am going to give a try on the .22 rifle to see how well it goes... If it doesn't work out then oh well, the rifle will still work and I can just throw a cheap thread protector on it.. That being said, does anyone have recommendation for a specific die? I am not sure if they are just all the same or is there a better quality that produces better threads..

[CMV]

Get the beefiest one you can find. A lot of 1/2x28 dies are small but you can find larger ones. They'll cut the same, just easier for me to keep a larger one straight. If you're using that adapter it won't much matter since that is supposed to keep you lined up straight

Brownells sells a decent one for $30. Adjust it so it screws on to the adapter and doesn't try to re-cut the threads. You want it to take some of the black oxide off the adapter - it should be snug but not cutting into the metal. If the die doesn't turn freely over the adapter, once the die bites into the barrel metal it will all lock up. When messing with those 2 pieces DON'T take your channel locks to the stub on the adapter that goes into the barrel. If you nick & burr it up the adapter will be useless.

When you go to cut the threads on the barrel with the die, don't do it in the lathe chuck. If it spins in the chuck jaws you'll make an ugly barrel. Put it in a sturdy vise with the right size V-blocks. You'll want to have a some TapMagic or similar cutting fluid on hand also. You can get a 4 oz bottle really cheap, but buy a large one to give to your friend for use of the lathe.