I have found over the years you can slow turn a vessel and apply a thick finish with no drips in a much shorter time …
I typically apply a minimal of 12 coats and sometimes as high a 20 for a good finish.
I use gloss versions of the the finish for most of the coats as it has higher solids and fills better. The last coat of finish is done with satin as it keeps the natural look of the wood.
I also level the first 3-6 coats after overnight drying until the entire surface is milky white Then move on to the next coats. The follow on coats can be done every few hrs without sanding.
The finishing rotary allows me to perform this process off of the lathe so I can turn another piece in parallel.
Nice. I never had thought of a dedicated rotating machine for applying finish before, but makes perfect sense. It was the only thing associated with wood turning that I knew typically required slow speeds.