Thread: Buffer Question

Originally Posted by Neil Miller

RPMs are quoted a lot, but are not the whole story. If you have a meaty machine capable of taking different sized wheels, then you have to consider the rate that the wheel surface is moving across the razor - surface feet per minute (sfpm).

If you have a rpm rate of 1725 with an 8 inch wheel, the sfpm rate is 3450.

If you have a rpm rate of 1725 with a 6 inch wheel, the sfpm rate is 2588.

Using the same machine and a 4 inch wheel the sfpm rate is the same - 1725.

I invoke the Law of Calvin!