Thanks for your input. I just want to clear up a little of my confusion, and I should be good to go. You said 100-500 rpm approx did you mean the blade itself?? I assume the grinder wheels are blazing at 3400 or so and then the blade itself is under power correct?? I understand the roller thing(I have a pic of a reliable grinder with the spring loaded wheel) My other unclear thing is do you bring the roller at the blade from the side then push it over or just force it straight on?? I assume you bring the roller to the wheel whichever way and then push it on the wheel with a screw type turn thing until the desired lip?? Thanks again man!!