Reply by Moron

Contrary to popular opinion, abrasion does not degrade carbide fast. Corrosion on the other hand is much faster at degrading carbide so its exposure to humidity, dew point even though it sits doing nothing can degrade the carbide to the point of junk.

a 20 year old blade from my persperctive has served its time.

Expensive is held within the wallet and just as an example, I pay upwards of 150 bucks for a blade on my circular saw and my miter saw blades can hit 200 a pop.

Carbide is not manufactured equally.

-- "Good artists borrow, great artists steal”…..Picasso