A bench grinder is the ideal tool for all those sharpening jobs around the house, but if you don’t own one you might find a belt sander works as well. Invert the sander and clamp it to your worktable, so that the belt is facing up. Lock the trigger switch “on” and you’e in the sharpening business. With an axe, for example, angle the blade slightly down to the oncoming belt and rotate the axe back and forth following the arc of the blade. And always remember to wear your safety glasses.