I agree with Frank and Mike that your problem is you say you turn it round, sand it round, take it to a chop saw to square the ends and then bottom it out in the chuck. You are not going to get your cylinder to run straight for two reasons. Your chop saw really does not square the end in my opinion and I can tell you if you bottom your piece out in your chuck it is not going to run true.
Originally Posted by ryan brown
Rough turn it round, cut a tenon about 1/4" long either dovetail or straight depending on the chuck, chuck it up and then drill your hole. Use a livecenter with a cone and turn to final size. You should be good to go.
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