Question: Why do some bowls not rotate exactly true after reverse chucking?
Here is what happens. I have been rough turning some cherry bowls approximately 12-16 inches. The wood is green and I use a face plate. After doing the outside of the bowl, I turn a tenon and reverse chuck using a Oneway Talon or my Oneway Stronghold chuck depending on size in order to do the inside of bowl. On some of the bowls I can see and feel that it is not turning true when I remount. Not too bad, some worse than others, but I guess I thought it should run true. Could it be the chuck? I typically trying to make sure that the tenon is not too wide so the jaws contact the bottom of bowl. Should the tenon be wider so it contacts the inside of chuck rather than the bottom of the bowl?
Could it be green wood?
Could it be when the tenon is made with sap wood?
Also, when I check the headstock with the tailstock, the points are not perfectly aligned, but pretty close. I guess I thought that would not matter as far as turning a bowl since the mounting and remounting is done from the headstock.
Any thoughts? Not that it matters but my lathe is a Powermatic 3520b. Thanks for any help.
Jeff