Double Tapping threads on a shaft....

pooln8r

AzB Silver Member
Silver Member
Hi...Just curious if this is possible or if anyone tried this but I have a shaft that I love using on one of my cues and want to also from time to time use it on my other cues which also have various 3/8 wood to wood joints. The current thread on the first shaft is a 3/8 x 8 Radial and I wanted to use it on either a 3/8 x 10 or a 3/8 x 12 cue. I have another shaft that is a 3/8 x 10 that I also wanted to use on a 3/8 x 12 jointed cue. I know I can have the thread of the shaft changed to the new thread but is it possible to have two threads in the same shaft?
 
Hi...Just curious if this is possible or if anyone tried this but I have a shaft that I love using on one of my cues and want to also from time to time use it on my other cues which also have various 3/8 wood to wood joints. The current thread on the first shaft is a 3/8 x 8 Radial and I wanted to use it on either a 3/8 x 10 or a 3/8 x 12 cue. I have another shaft that is a 3/8 x 10 that I also wanted to use on a 3/8 x 12 jointed cue. I know I can have the thread of the shaft changed to the new thread but is it possible to have two threads in the same shaft?

I don't think it would be a good idea to double tap threads into wood because the wood is probably not strong enough. More than likely both threads would tear out.

Good Cuemaking,
 
Would double tapping work if it was done into a phenolic insert?

More than likely, the pin will try to follow the wrong threads causing them to fail. It may not be the first time you screw it together but it will happen. Phenolic is not indestructible.
 
Thanks Arnot, Thanks Ryan....I appreciate your help on clearing this idea up for me. My shafts will now definitely remain threaded as they were made.

Makes a lot of sense that there would not be not enough wood there to maintain two sets of clean threads and that cross-threading is inevitable.

It's too bad that there isn't a way to adapt the joint like you can a headphones plug to fit different size jacks. I guess the closest thing to what I have been thinking about would be the universal shaft system but that requires getting a new shaft and therefore defeats what I was trying to do. I'm sure an adapter could be made but that would probably add too much weight, move the balance point too far forward and could possibly change the hit or feel of the cue. Not all are bad things to do but if the cue already feels great or balances well my idea would definitely change things at least a little.
 
Hi...Just curious if this is possible or if anyone tried this but I have a shaft that I love using on one of my cues and want to also from time to time use it on my other cues which also have various 3/8 wood to wood joints. The current thread on the first shaft is a 3/8 x 8 Radial and I wanted to use it on either a 3/8 x 10 or a 3/8 x 12 cue. I have another shaft that is a 3/8 x 10 that I also wanted to use on a 3/8 x 12 jointed cue. I know I can have the thread of the shaft changed to the new thread but is it possible to have two threads in the same shaft?

There's probably a way to do it. I'm not sure how strong the inserts would be or how long it would last. If you had nothing more to do than proto stuff, one could probably fashion a removable insert that had the same od threads but different id threads out of a phenolic or other material that had some strength to it.

Didn't/doesn't the smart shaft have some type of set up similar to this making it a universal system?
 
There's probably a way to do it. I'm not sure how strong the inserts would be or how long it would last. If you had nothing more to do than proto stuff, one could probably fashion a removable insert that had the same od threads but different id threads out of a phenolic or other material that had some strength to it.

Didn't/doesn't the smart shaft have some type of set up similar to this making it a universal system?

I was trying to find a way to do this with shafts I already own. That's why I proposed the idea of threading the shaft for two different threads. The Universal shaft is a great product but it involves getting another shaft. By the way, I'm not against having new shafts made but I just happened to like the way the ones I currently have play. It just sucks that I have shafts I really like for one style of a 3/8 pin but cannot use them on the cue that I like better with another style of 3/8 pin. I thought that if the thread was started at the same point but off just enough that maybe you could tap in between the OD of the original thread to get them to coexist in the shaft and not fall apart when switched between cues. I Think if there was more space between the threads it would work like maybe adding a 3/8 by 10 thread to a shaft threaded for a radial pin. Maybe I have the wrong mental picture about this as I've already heard that the threads would eventually cross thread and fall apart. At any rate I can always decide to retap the threads and use exclusively with my preferred cue.
 
I was trying to find a way to do this with shafts I already own. That's why I proposed the idea of threading the shaft for two different threads. The Universal shaft is a great product but it involves getting another shaft. By the way, I'm not against having new shafts made but I just happened to like the way the ones I currently have play. It just sucks that I have shafts I really like for one style of a 3/8 pin but cannot use them on the cue that I like better with another style of 3/8 pin. I thought that if the thread was started at the same point but off just enough that maybe you could tap in between the OD of the original thread to get them to coexist in the shaft and not fall apart when switched between cues. I Think if there was more space between the threads it would work like maybe adding a 3/8 by 10 thread to a shaft threaded for a radial pin. Maybe I have the wrong mental picture about this as I've already heard that the threads would eventually cross thread and fall apart. At any rate I can always decide to retap the threads and use exclusively with my preferred cue.

You might not like it as much when that tapped hole has a lot less contact.
 
I'm almost sure that the Universal shaft has many adapters for different thread size and count but once installed into a shaft, they can't be removed without damage to the insert.

Dick
 
I'm almost sure that the Universal shaft has many adapters for different thread size and count but once installed into a shaft, they can't be removed without damage to the insert.

Dick

I thought the universal smart shaft was a high tech aftermarket lower deflection/lower vibration shaft that adapted to different joint pins based on the adapters that were available.

Here's a couple links to what I thought it was when I mentioned it.

http://www.universalsmartshaft.com/
http://www.cueandcase.com/pages.php?pageid=3

If this concept can work with the regular shafts I have that would be something I would definitely try out.
 
I thought the universal smart shaft was a high tech aftermarket lower deflection/lower vibration shaft that adapted to different joint pins based on the adapters that were available.

Here's a couple links to what I thought it was when I mentioned it.

http://www.universalsmartshaft.com/
http://www.cueandcase.com/pages.php?pageid=3

If this concept can work with the regular shafts I have that would be something I would definitely try out.

If you will read the articles that you posted you will read that the inserts are available for dealers so that they can just stock the extra inserts instead of stocking the much more expensive completed shafts for all the different configurations. I'm sure you can buy the extra inserts but I am also sure that the old insert is destroyed upon removal from the shaft. I'm sure you could switch inserts every time you intend to use on a different cue but expect to pay 25.00 or so for a new insert every time you do it.

Dick
 
I was trying to find a way to do this with shafts I already own. That's why I proposed the idea of threading the shaft for two different threads. The Universal shaft is a great product but it involves getting another shaft. By the way, I'm not against having new shafts made but I just happened to like the way the ones I currently have play. It just sucks that I have shafts I really like for one style of a 3/8 pin but cannot use them on the cue that I like better with another style of 3/8 pin. I thought that if the thread was started at the same point but off just enough that maybe you could tap in between the OD of the original thread to get them to coexist in the shaft and not fall apart when switched between cues. I Think if there was more space between the threads it would work like maybe adding a 3/8 by 10 thread to a shaft threaded for a radial pin. Maybe I have the wrong mental picture about this as I've already heard that the threads would eventually cross thread and fall apart. At any rate I can always decide to retap the threads and use exclusively with my preferred cue.

I was suggesting you do the changeable inserts to your shafts, not buy another. Projects like these are fun to figure but nobody wants to pay what it's worth. You could probably get another whole new shaft with different threads for what I'd charge to mess with it. That's why I suggested you proto it yourself.
 
If you will read the articles that you posted you will read that the inserts are available for dealers so that they can just stock the extra inserts instead of stocking the much more expensive completed shafts for all the different configurations. I'm sure you can buy the extra inserts but I am also sure that the old insert is destroyed upon removal from the shaft. I'm sure you could switch inserts every time you intend to use on a different cue but expect to pay 25.00 or so for a new insert every time you do it.

Dick

If the inserts are destroyed when removing them that would really suck for my plans for using a product like this and would be rather expensive over time.:eek: Then again my current idea of using the same shaft on multiple cues may not be what Bill Stroud intended for his invention. I don't know anyone that has one but it would be cool to know if the adapters are fairly durable and if there is any plan to have this option made available for shafts other than the Universal Smart Shaft.
 
I was suggesting you do the changeable inserts to your shafts, not buy another. Projects like these are fun to figure but nobody wants to pay what it's worth. You could probably get another whole new shaft with different threads for what I'd charge to mess with it. That's why I suggested you proto it yourself.

Oh OK understood...I think it would be fun if I had a lathe with a live threading setup to do myself. I think I might know a good local machinist to try out my idea. I don't think it would be that hard to do but the part that would be difficult is deciding what to make the thing out of and not adding too much length to the cue or interfering with the cues feel, balance or weight. That is without re-engineering how pins work altogether. Thanks for the suggestion :)
 
Would double tapping work if it was done into a phenolic insert?

I am not a cue maker.
but I know one.
Piercy exclusive....makes those sick looking cues with the new four points.
but anyhow, He made me a shaft with three treads. 5/16 14 , -18, and a 3/8 10... I was very astonished by what he did. it cost me a few bucks but worth it. it did take him a month to figure it out without the stripping.

Once done it was nothing to screw the shafts on. there were indicator lines to where the threads started.

ayway good luck.
 
I am not a cue maker.
but I know one.
Piercy exclusive....makes those sick looking cues with the new four points.
but anyhow, He made me a shaft with three treads. 5/16 14 , -18, and a 3/8 10... I was very astonished by what he did. it cost me a few bucks but worth it. it did take him a month to figure it out without the stripping.

Once done it was nothing to screw the shafts on. there were indicator lines to where the threads started.

ayway good luck.

hey man, whats up!? I want to first say welcome I never thought youd make it here!I told you you'll like it once you get on.
Aside from that your not suppose to be telling anybody this till I get it patent? remember!
Anyhow to the question I say it can be done up to three threads so far as I know for a fact. But unless you know how to do it I wouldn't get it retapped get it plugged and tapped. that's my suggestion.
 
At the risk of ridicule I will tell you that I have a shaft that is tapped for the 3/8 x 10 AND the Radial pin.
It has held up for about a year now.
I used super glue to harden the threads before the second tapping.

It works (or it did with this shaft) and I have had no problems with the shaft.

I also have hook adapters that I use to hang cue butts while the finish is curing and they all are double tapped like that.
Those were done years ago and I never applied for a patent ... :sorry: ...

Willee
 
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I have a ob1 that I double tapped from 3/8x10 to radial like willie and it has worked great.I have not had any problems with it.I did radial tap about 1 1/2 yrs ago and it is still ok today.I have also done 5/16x18 to 5/16x14 and vise versa and not had any threads stripped out(that I know of)I`m sure if someone tried over tightning the shafts they might strip.Your always better off staying with 1 thread size in a shaft but the double will work.
 
I am not a cue maker.
but I know one.
Piercy exclusive....makes those sick looking cues with the new four points.
but anyhow, He made me a shaft with three treads. 5/16 14 , -18, and a 3/8 10... I was very astonished by what he did. it cost me a few bucks but worth it. it did take him a month to figure it out without the stripping.

Once done it was nothing to screw the shafts on. there were indicator lines to where the threads started.

ayway good luck.

The Shopsmith of cues...

How about we come up with a new improved design for the wheel?

Dale
 
Because something can be 'rigged' to work doesn't necessarily make it a good idea.
Anytime you put two different threads in the same hole, you're reducing the thread contact area by at least 1/2. 3 different threads, even less contact.
Why would you want to compromise the connection that you rely upon to hold the shaft securely to your handle?
About the time you can't keep your shaft tight/secure on ANY pin, you'll realize why this wasn't such a good idea.
At the end of the day, it's your cue and you can do whatever you want with it. There will always be someone to take your money for providing this service(?).
 
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