There have been several threads on what type of grinder to buy for sharpening lathe tools. Rikon slow-speed grinders consistently receive solid recommendations. For those using CBN wheels, many recommend using the 1hp grinder over its smaller 1/2hp brother. If you've been waiting to pull the trigger, Craft Supply USA has the 1hp version on sale for $186.99, a $33 savings off CSUSA's usual $219.99 price. (CSUSA adds shipping to this price.) I bought the 1hp version about a month ago at the regular price, and I'm very impressed with it.
https://www.woodturnerscatalog.com/p...gn=20-11-rikon
This is just FYI. I don't have any interest in CSUSA or Rikon.