I have the Tru Cut sharpener. I do the required 30sec on one side, then flip it over, 30 sec on the other, then flip it back for a further 30 sec. The blade is so sharp it will slice through wood. I always keep it nice and sharp, saves a lot of time than messing around with a dull blade. I never save a blade with a nick in it, it will never cut properly again.