Gunsmith for square barrel thread

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meo1981

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I'm looking for a 'smith who does square threading, the project is an original trapdoor rebarrel. Anyone with ideas as to who to go to?

Thanks

Mike
 
Unless they were completely asleep whilst supposed to be paying attention, a square thread is within the grasp of pretty much any dude with a thread cutting lathe.

Not exactly rocket science.
 
I've got a more than competent gunsmith for just about everything under the sun but he WILL NOT touch square threading and I'm of the opinion that you aren't going to get the best work from any tradesmen who isn't inclined to do a job, good money being offered.
 
If he won't touch a square thread, maybe he's a better judge of his competency overall, than you are.

Just sayin.

I have cut several square threads. It's not a whole lot different than any other thread, if the person decides that they can do it, instead of deciding they cannot.

Grinding the tool is a bit fiddly, as is sorting out the actual depth to cut, as the manufacturers did not always use a full depth thread. Much to be said for doing a test plug to get sorted out prior to carving on the barrel itself.
 
meo1981 said:
I've got a more than competent gunsmith for just about everything under the sun but he WILL NOT touch square threading and I'm of the opinion that you aren't going to get the best work from any tradesmen who isn't inclined to do a job, good money being offered.
Click to expand...

My guess is that he doesn't want to shell out for a carbide tool to do that, and doesn't want to grind a cutter...

There's a pretty good gunsmith in Champion, AB....
 
The biggest 'difficulty' with 'square' threads is measuring carefully the diameters and widths and making sure you are not bottoming out or cutting the width too small. It has to be pretty precise. Practicing on a stub first and getting the exact measurements is a good idea if you don't have a properly fitted thread to copy.

You certainly don't need carbide tooling...
 
Absolutely right... "no carbide needed" just the old barrel tenon for measurement taking with any old mastercraft caliper and a 2 inch piece of high speed steel cutter and he's set.


The very first barrel threads I ever cut ( and I think the second thread of any kind that I ever cut) was a square thread for a Rem RB. Careful measurements and careful adherence to said measurements yielded a barrel that spun on like a top and goes "thunk" when the thread buttress comes up tight, I don't even use a barrel wrench to tighten it before shooting...it just plain stays where it's supposed to with a wrist twist. I still own the gun & barrel (45-70) along with 2 other "original 50 cal." that I change as the notion strikes me.
 
It's a won't not can't situation on my end. He's done some pretty impressive custom stuff to date so I know he CAN but if money won't move him (a lot of money, plus I was thinking of doing 5) I'm guessing it's because he's older/retiered mostly and just doesn't want the hassle.

So if anyone has a Gunsmith that's rebarreled a trapdoor for them please feel free chime in.
 
meo1981 said:
It's a won't not can't situation on my end. He's done some pretty impressive custom stuff to date so I know he CAN but if money won't move him (a lot of money, plus I was thinking of doing 5) I'm guessing it's because he's older/retiered mostly and just doesn't want the hassle.

So if anyone has a Gunsmith that's rebarreled a trapdoor for them please feel free chime in.
Click to expand...


I think your answer for his hesitating is right here...."older" generally means eyesight degradation and I know I couldn't tackle something now that I considered quite easy 15 yrs ago.
 
I've cut square threads, Acme theads, 60 degree metric and US threads. But and that's a BIG but. I always practice my thread cutting on round bar stock before I cut into a barrel that I can't screw up. Yup, I always keep some bar stock for practice and set up. :)
 
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