Forrest promises that their blade dempener/stiffener will deliver smoother, quieter cuts from table and radial arm saws. This easily-installed blade accessory mounts on the outside of the blade to dampen vibrations originating from the blade, motor, and drive belt — a source of noise and blade throw-out.
Dampener size for a particular blade should be 1/2″ to 2/3″ of the blade’s diameter. For example, you’d want to choose a 5″ dampener for a 10″ blade. Just remember that you can only use this combination to make cuts up to 2.5″ deep as that’s where the dampener will contact wood. Also, you’ll need to remove any bumps or burs on the blade surface so the dampener can sit flat and tight against the blade.
Forrest makes the blade dampener in the USA from of top-quality saw steel. They harden and precision-grind the dampener parallel to within .001″, resulting in very little side runout.
The 5″ diameter blade dampener with a 5/8″ arbor hole — which fits a 10″ table saw blade — runs around $21. Forrest manufactures other diameters ranging from 4″ to 10″. Miter saw owners are out of luck, though, as the dampeners are incompatible with miter saws.