If you have a dirty and grimy circular saw or tablesaw blade, the gunk on the blade can hinder its performance. It is best to keep your blades and lubricated for the cleanest cuts, and the best blade life. In these steps, I will show you an effective alternative to cleaning your blades without using the pricey blade cleaners at your home improvement store.
First, unplug your tablesaw!
Remove your circular blade from your saw, table saw, or cross-cut saw. WoodCraft or Rockler offer a great tool for removing Table Saw blades called the Saw Jaw that I recommend you use if you change blades often.
Get out a shallow cooking pan and fill it with enough water to cover your blade. The foil pans work great, because if you use these instead of a nice metal pan, you will not scratch up your good pans, and you can reuse them for all of your blades. If they get ripped up, just throw them away.
Take about a tsp of laundry detergent, and mix it into the water in the shallow pan. Stir it up with your finger to get it all mixed in and nice and soapy.
Place your circular blade into the water and detergent mix.
Let the blade soak in the solution for about 15 minutes or so.
Take your nylon or soft bristly scrub brush and scrub all of the gunk off of the blade. The best way to do this is to hold the blade down against the bottom of the pan with one hand, and scrub the blades with the brush.
Flip the blade over and repeat the scrubbing process described above.
Take the blade out of the water and towel dry it thoroughly with a 100% lint-free cotton towel or rag. Be careful not to snag the blade teeth in the towel or to cut yourself.
Once the blade is completely dry, spray WD-40 on the blade to help prevent against rust. Take a shop rag and wipe the WD-40 all over the surface area of the blade and the teeth.
Install the blade back on your saw.
Do one blade at a time
Wash your blades minimally to avoid getting them rusty, only do this when they are extremely gummed up with wood tar, and dust.
Handle the blades delicately and do not cut yourself