I recently upgraded the wheels on my Rikon slow-speed grinder to a pair of Woodturnerswonders 4-in-1 CBN wheels. Half of the reason for the purchase was curiosity and the other half was frustration at my Tormek’s constantly glazed-over wheels.
I got a pair of 80/220 wheels and am really happy with them. They grind cool, leave a great edge, and best of all don’t need any maintenance.
Here’s a short video review on the wheels where I talk more in-depth about those positives as well as how I got them trued up to within 1/1000″ side-to-side runout.