Splint, the HF lathe has ways on both sides of the head, and I did a reacharound. Here’s pretty much the same setup on the juniper bowl I sent off on a previous swap.
Thanks, all! It was a ton of work, and I backtracked more than once as the sweet gum kept moving on me. I think I scraped / sanded finish off at least twice as I thinned and flattened the plate again. Then once I got the inside done and turned off the mortise in the base holding it in the Cole jaws, I of course wanted to do one more thing on the inside, but now had no good way to hold it.
Learned a lot on this one, but eventually I was pretty happy with it.