All pen turners have seen the "elliptical effect" from a mandrel used one to many times. I took a ride on the wide side and picked up a M2 center and some "Between-the-center" bushings from JohnnyCNC. I couldn't be happier It took about an hour to get used to the set up and being habitually absent-minded but this stuff makes all the difference
Amboyna burl and Spalted Maple from Thoits & Thoits of Beverly Hills
Both have CAx3 finish with Ren Wax for fun.
Lemme know what you think!!