It's a POS in my opinion. My sharpener uses a machine that cost close to $500,000 to sharpen my blades. I don't want my $80+ blades on a machine that costs less than they do. For sharpener, I recommend Dynamic Saw in Buffalo NY (Dynamicsaw.com). Great work, fair prices and as close as the post office to my house. Put blades in flat rate box (less than $10), drop off at post office, call Dynamic with my credit card info, and about two weeks later blades that as sharp, if not sharper than new are dropped off by UPS guy. You can even order flat rate boxes online, print postage and arrange for pick up at your house, so you don't have to go to post office.