Pottery chuck for bat system

This chuck and plate are for 6 inch bat systems, it fits snug and perfect in my StudioPro bat system. Magnets used to hold in place are 9mmx1.5mm neodymium, held with E6000. Designed on Rhinocerous3D by me ***with heavier pieces Ive noticed the magnets may not be strong enough to hold, I put a little wad of clay over the fittings and was fine. this was with a 10lb vase