Well I am pretty bad at sharpening belts....<img src="/ubbthreads/images/graemlins/ooo.gif" alt="" /> <img src="/ubbthreads/images/graemlins/tongue.gif" alt="" />

They last pretty long. I don't know f I can estimate the number of knives though. They usually last me about 6 months and I sharpen stuff all the time. Friends knives, my knives, lawn mower blades <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />