Cleaning out insert threads

sk8ordie

HTTR!
Silver Member
Hello everyone, I have a question that I need to ask before I try to help out a fellow pool player. He bought a carbon fiber shaft from rhino for his production, Joss Cue with the standard 5/16 x 14 piloted pin. They sent them the first one and he sent it back because it didn’t fit. Rhino then sent him like a test joint protector to make sure that fit his butt end before they sent out another. The test joint protector fit perfect so they sent him out another shaft, and that one did not fit either. For one, the pilot was too thick which I took down to match perfectly with the test joint protector. The problem now is that the threads won’t go all the way down and leaves about a 4 mm gap and I can tell the pin. It’s either catching something in the threads or the insert is
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tapered which I don’t think it is tapered. Testing the depth , there is plenty of room for the pin. He emailed them back and they told him to take it to a Q repair to have it fixed and they would knock $40 off the price, basically send him $40 back. I was wondering if I bought this 5/16 x 14 HSS tap, if that would clean out the threads? I know the right way to do. It is to replace the whole insert but I don’t trust my Mid-America basic Cue repair Lathe to do it especially if the threads get messed up pulling out the insert. I really think the threads are just a little damaged towards the back of the insert and if I could just clean them out with a tap it would fix the problem. I’ve included a picture of the tap that I want to use and just need your advice. Thank you all in advance for your advice.
 
First off....my advice is DO NOT BUY A RHINO..... secondly, running a tap thru the insert should cure all problems as long as the depth of the hole is deeper than the pin length. Also you can use a tap that has been modified to be a bottoming tap, so basically cut the pre-tap area of the tap off, and then it will thread all the way down to the bottom of the hole
 
The Rhino I bought fit 4 out of 5 5/16x14 butts i had. The last one I shaved the last thread down to fit (maybe the pin was longer or the insert wasnt threaded enough) but it left a small gap between the shaft and butt before I trimmed it
 
The Rhino I bought fit 4 out of 5 5/16x14 butts i had. The last one I shaved the last thread down to fit (maybe the pin was longer or the insert wasnt threaded enough) but it left a small gap between the shaft and butt before I trimmed it

You shaved down the last few threads on the pin connected to the butt ofthe cue? I. Definitely don’t wanna do that. What I don’t understand is they sent him a test insert which kinda looked like a joint protector and that fits perfect but then the shaft they sent him not only had a thicker diameter pilot on it but the pin still will not go all the way through.


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Shaved one at least a dozen left. Eazy with a lathe. My biggest bitch was the 21.5mm overall joint diameter compared to my other shafts.
 
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