1.) We all know that with flat faces, a pin that is +or- .002 can roll fine without a opposite compound error in the machining of the shaft. 2.) I won't describe the details of my shaft concentricity machining standard procedure because your closed mind will doubtless disagree because of your nature.
1.The lathe has zero TRO but you can't bore the hole to the exact size of the barrel ?
2. Discussed and argued to death. Don't worry, we're not in danger of tapping shafts and then turning them again . They get live threaded and then matched to the butt.
Only a few got this shaft threader.
You should have bought one. Makes your flat bottom threads much easier to do. Just bore the hole with a 1/4 end mill on power feed. The hole comes out freaking shiny and dead nuts.
Threading for joint screws and weight inserts at the bottom is so much easier with this 2" threader too.
You can get one from one of the pool parts suppliers soon.
So many makers have already bought 'em. Some of the best makers around too. It's so easy to just mill the hole for the bottom threads then mill the barrel hole. Then thread going out. Leaves a nice glue rings around the barrel hole too.
I've had peeps thanking me for making joint screw install for 3/8 screws much easier. They don't have to leave the cue on the lathe anymore when gluing the screw. No need to "cheat" or leave the tail stock center resting on the screw.
And in the spirit of this thread.
Here's a free video from WS that is worth watching. It's a priceless video imo.
https://www.youtube.com/watch?v=Hajh5n39H8M