Excuse me: how does the carpenter's saw sharpen? Thank you for your guidance.

File the teeth with a steel file. Sawteeth generally have two kinds: open teeth and non-open teeth. The blade should be filed thin. The bladeless steel file should be perpendicular to the saw surface, and the file surface should be perpendicular to the saw surface. After the saw blade is filed, it needs to be taken out, that is, the sawtooth is staggered, so that when sawing things, there will be a saw seam and no clip, so that you will feel that the force used is less and faster.