And so, when it comes time to sharpen or replace a table saw blade, woodworkers and tradespeople often turn to shop-made jigs... homemade tools that are used to improve a workshop's other tools.

Clamp the blade in a bench vise and clean off rust and debris with a wire brush (don't erase the paint marks you made earlier). Put on gloves and safety goggles and use a bastard mill file (a flat ...