Wolverine / One way Sys. 120 grit. I come off the grinder, right to the lathe. I have 2 -low rpm grinders from Woodcraft. Made in China of course, but these are great. On one of the grinders I use a buffing wheel, and several different compounds (sometimes). Please don't pass up learning how to do this , and send your tools out to be sharpened. When I first bought my lathe , and didn't know anything about anything. I used a high speed grinder and a home made (wood) tool rest from a drawing I found in a book. The tools were carbon steel pieces of crap, but I got the the things sharp , and it was a beginning on the cheap. Also...I love Jerry Glaser lathe tools. Michael