So I'm new to turning in 2020 and I've been cranking out bowls this last month and feel that I'm starting to get a feel for it (though far from actually good at it). In the beginning all of my bowls were 6x3 from standard bowl blanks that I bought and things went fairly well. Now I've started to rough turn bowls from green wood and my issue is with the bigger ones. I'm using a screw chuck and the tailstock center to mount the log and I rough shape the outside of the bowl, create a dovetailed tenon and then flip it around into vicmarc chuck to start hollowing out the bowl (standard procedure). However when I do that the bowl is ever so slightly "out of round"-- it wobbles some which causes undue vibration when I go to hollow it out. It did not do that when it was in the screw chuck between centers- it spun true before I turned it around. It only happens when my bowls are about 10 inches or more in diameter. So my questions are: does this actually matter? and if so what is the cause of it and how do I fix it?
thanks!
thanks!