Step 3: Clamp Blade
If you have a workshop, secure the blade in a clamp or vise. If not, brace the shears in your lap or on a countertop, but be careful not to cut yourself while holding it steady!
Step 4: Sharpen Blade
For very dull or nicked edges, start with a mill file or coarse sharpening stone. If the blade is in good shape, begin with a medium or fine sharpening stone. Lubricate the stone (if required), then sharpen by laying the stone flat against the beveled edge of the blade.
Using steady strokes, push the stone or file toward the sharp edge of the blade. Continue until you’ve sharpened the whole length of the blade. Don’t overdo it – a few strokes should be all it takes.