I do a lot of repairs and I must say that straight shafts are very rare. I might find one shaft out of 100 that is dead straight (within 3 thousands). Even high dollar cues are in this category. Most butts of cues have moved in a say a 5 year period. So how long does it take to make a shaft to keep them straight. I have personally heard from some of the US manufactures that it is the amount of cuts that will keep a shaft straight, even done in one day. I heard this getting my Sledgehammer mass produced here in the US. I can say from experience that this is false. I have heard that soaking the shaft wood in dangerous chemicals will stop movement. I tried this 20 years ago and it is not a good thing to do. Stabilizing chemicals were designed to go under a finish I believe because it irritates some people's skin. I hope nobody is still using these products anymore, 20 years ago I developed a rash on my bridge finger from the chemical. I have heard that laminated shafts do not move and fiber glass coated shafts also do not move. These shafts are in the same category as all shafts about 1 out of a hundred are dead straight. So my question is how long does it take to make a shaft that will stay straight though out the life of a cue. Or is it impossible. I have heard from just about every customer that has brought in work that his cue is straight but if they are spun between centers the real deal is discovered. A pool table roll is very deceiving, the only real test is between centers and most cue makers cannot get a pin in the center for an accurate test, and the shaft thread side is the biggest joke I have ever seen as far as a concentric 60 degree bevel. Some one might say you don't need this but without it the only way to face off a shaft is in a lathe grabbing it where marks can be accidentally made. Facing off a cue is something that will be done many times during the life of the cue. Wood absorbs moisture at the open end of the threads, all of them at some time or other will move and need facing to keep the straight concentric tip to bumper tool for making balls. Don't need a dead straight cue, then it don't matter.