Shaft thread re-tapping?

[CeaseLess]

I have a shaft that I want to try out as my player but my pin is radial and the shaft thread is 3/8x10. I was talking to a guy I know who sells and works on cues and he told me he could re-tap the shaft to a radial thread. What exactly is re-tapping, what is the process? He said he could only re-tap a 3/8x? to another 3/8x? Is this different than changing the thread to say 5/16 thread? Has anyone had this done to a shaft of theirs that can give me some insight, does it change the feel of the shaft, were you pleased and how much did you pay? Thanks in advance. --CeaseLess--

 

[DeeDeeCues]

I have a shaft that I want to try out as my player but my pin is radial and the shaft thread is 3/8x10. I was talking to a guy I know who sells and works on cues and he told me he could re-tap the shaft to a radial thread. What exactly is re-tapping, what is the process? He said he could only re-tap a 3/8x? to another 3/8x? Is this different than changing the thread to say 5/16 thread? Has anyone had this done to a shaft of theirs that can give me some insight, does it change the feel of the shaft, were you pleased and how much did you pay? Thanks in advance. --CeaseLess--

Re-tapping would suggest that he is going to use the existing hole and simply run a different tap down the hole. It sounds like you may not know what a 'tap' is, if you do, apologies and you can skip the next paragraph.

A tap is a cutter used to cut threads into a bored hole. There are multiple teeth set on the same form as the screw that will thread into the hole.

If the guy who 'works' on cues claims that he can cut a 3/8-X thread into a 3/8-Y (X and Y being different thread pitches, which is the number of threads in one inch of length), he is a hack and should never be called upon to do anything to a cue someone likes. It is a routine procedure to do the repair correctly and bore a larger hole in the shaft, and install a new insert which is threaded correctly.

The correct process of installing a new insert would work for going from a larger pin (i.e. 3/8-10) to a smaller pin (i.e. 5/16-14).

 

[CeaseLess]

Re-tapping would suggest that he is going to use the existing hole and simply run a different tap down the hole. It sounds like you may not know what a 'tap' is, if you do, apologies and you can skip the next paragraph.

A tap is a cutter used to cut threads into a bored hole. There are multiple teeth set on the same form as the screw that will thread into the hole.

If the guy who 'works' on cues claims that he can cut a 3/8-X thread into a 3/8-Y (X and Y being different thread pitches, which is the number of threads in one inch of length), he is a hack and should never be called upon to do anything to a cue someone likes. It is a routine procedure to do the repair correctly and bore a larger hole in the shaft, and install a new insert which is threaded correctly.

The correct process of installing a new insert would work for going from a larger pin (i.e. 3/8-10) to a smaller pin (i.e. 5/16-14).

So a ⅜x 10 would not be able to be retapped to radial ⅜x 8? It would need a new insert?

 

[Michael Webb]

So a ⅜x 10 would not be able to be retapped to radial ⅜x 8? It would need a new insert?

What DeeDee Cues described is the proper way to do it.
But there are some who use the existing hole and change the thread.
Main problem is,
It only takes one time to cross thread it to screw it up.
Then you have to have it done the correct way.

 

[Jimmy_Betmore]

So a ⅜x 10 would not be able to be retapped to radial ⅜x 8? It would need a new insert?

Is it possible? Sure. I suppose. I've seen people do all kinds of things I didn't think was possible. But you will inevitable end up cross threading it at some point and damage the threads. Then you'll have a useless shaft until you can find and pay someone to do it the way it should have been done in the first place. Spend the little bit of extra time and money and find someone to do it the right way. You'll be glad you did.