Correction--the Flexade can go up to 15,000rpm (I misread thecatalog listing). But my bench grinder can only go 3,450rpm. Is thattoo slow for jewelry-making tasks?
Janet, I doubt that you bench grinder turns at 7500 rpm, more likely3250 max rpm. Then you have to be able to vary the speed. A Foredomoperates over it's whole speed range, which is one thing that makesit such a useful tool. Joel