Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Cutting threads
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="25WSM" data-source="post: 2245784" data-attributes="member: 38048"><p>The finish looks bad but you have treads that will work. If it already fits the receiver then just lube it good and tighten and remove a few times before your final torque down. Like others have said without knowing your tool bit and speed and lube its hard to point the finger at just one thing. I was taught at Gunsmithing school to run the lathe in the lowest back gear. But i run the highest back gear and the finish will much improve with some rpms. Another mentioned filing the tops of the treads. Great advice. When your barrel just starts to want to go on file tops of the treads down a little. Then try your fit again. If you need to cut the threads more and they point up then just knock them down again. Dont know if you were feeding straight in or if you set your feed at 29.5. Straight in feed causes a ton of tool pressure because its cutting on both sides of the bit as opposed to 29.5 degrees cuts only on one side. Lots of things can cause the rough thread. Try a few of all our tips on a practice piece of stock and play around till they look good. Dont be afraid to take bigger bites at the start. I turn a barrel thread down to the final fit in 7 passes. Then i take small bites to get the fit i want. If your setup is delicate then you have to to take small bites. Good luck on your next one. If your ever near Pittsburgh stop in. </p><p>Shep</p></blockquote><p></p>
[QUOTE="25WSM, post: 2245784, member: 38048"] The finish looks bad but you have treads that will work. If it already fits the receiver then just lube it good and tighten and remove a few times before your final torque down. Like others have said without knowing your tool bit and speed and lube its hard to point the finger at just one thing. I was taught at Gunsmithing school to run the lathe in the lowest back gear. But i run the highest back gear and the finish will much improve with some rpms. Another mentioned filing the tops of the treads. Great advice. When your barrel just starts to want to go on file tops of the treads down a little. Then try your fit again. If you need to cut the threads more and they point up then just knock them down again. Dont know if you were feeding straight in or if you set your feed at 29.5. Straight in feed causes a ton of tool pressure because its cutting on both sides of the bit as opposed to 29.5 degrees cuts only on one side. Lots of things can cause the rough thread. Try a few of all our tips on a practice piece of stock and play around till they look good. Dont be afraid to take bigger bites at the start. I turn a barrel thread down to the final fit in 7 passes. Then i take small bites to get the fit i want. If your setup is delicate then you have to to take small bites. Good luck on your next one. If your ever near Pittsburgh stop in. Shep [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Cutting threads
Top