I think if you are buying a lowball grinder the Coote is a better deal, the grizzly runs way to fast, but just my 2 cents. i bought a second hand Coote with a 3 pully wheel on the grinder and the motor, so as a nubie i can go real slow. with a grinder a oops can screw things in fractions of a second. so slow is good for nubies.
I bought a 1/4 sheet palm sander, not very expensive for the time saved. I use it with the rubber pad removed to keep things sharp, works like a charm, 10 min and you are done like dinner. I would think you could glue the right shape round on and go for it. Saves hours of sore black fingers.
Cheers Ron