Hey, Great tutorial, I saved it to my favorites a long time ago when you first posted it! Anyways I was wondering, do you drill your insert after turning the tennon on the call with the lathe? Or previous to the whole method? I couldn't figure out wich you did on ur tutorial it seems to me that you would turn the tennon while it was on the lathe before doing the glue up just incase it might be a tad off center the next time, and if you drill previously why dont you use a mandrell? Thanks, Travis