I am sold out of the custom-made stainless-steel collet quills. I have no plans to make any more. This dop was the final change I made to my Omni-e Faceting Machine before abandoning the swing-arm base completely and moving to a custom-made flat base. The new quill eliminated a lot of the error and frustration I experienced when trying to cut to meet-points.
These quills were a custom design made for me by Mike Jenichen of Alldops.com. Please contact Mike directly as he may be willing to make one up for you.