conetip said:The biggest problem is shafts that are not round.The best you can do is average out the error. Either buy using a collet or adjustable chuck. But the problem is dealing with an out of round shaft. They can be easily .1 mm or more in a lobed shape. Some of the best cues are still, .03 mm out of round. This could be the natural movement of the wood or the way it was finished and sanded.The next decision is how much work are you going to do to put it right ?. Just correct for an inch or so , or do you end up refinishing the whole shaft ?.
I give the customer my opinion and a price and let them choose. No point refinishing a whole shaft and still have an unhappy customer, or just doing a little when they wanted the whole shaft refinished.Some choose to have the ferrule round and cut just to the wood, with the ferrule being the same as the average diameter. There are places where it is over and under.
Neil
I see this everyday, and you are correct, most shafts are out of round to some degree. Some alot more then others though, and you can work your tail off trying to center things, and still the best you can do is try to meet in the middle by only removing the least amount of material. You also have to consider the center line of the shaft, and not throwing that out of wack any worse then they may already be.
I see this to be even more extreme in well used shafts, and I suspect the worse of It comes from hand sanding, although that is not the only source I'm sure. It could also be caused by a ferrule install that was done previously, if the shaft wasn't centered well during the installation, and the ferrule was hand sanded flush on one side. I guess there are alot of things that could cause It.