Hi all!

I am going to build a 2x72" all purpose belt grinder, mainly for making razors, knives, and restorating razors. My main question would be, what surface speed should I run? I will use a step pulley, so I will have 3 speeds to use, so I can play a bit with it.

What is the minimum I need for roughing? What is the maximum I can use when finish grinding? Some guide lines would be good to start with.

BTW the motor is a 750W 2 phase with 2870RPM, I hope this will fit the bill.
I have some motors that are in the 150-200W range, those run about 3000RPM, have these enough power to make a small belt grinder solely for resto work? I don't think they are suited for bigger grinding projects, but maybe I am wrong, this is why I am asking