I have a Sawstop PCS and no brake activations for a long time until yesterday. I was using my Incra miter gauge and I had somehow left a small T Nut in a groove. Of course it felt out touching the blade and BANG !!!..The cartridge fired and blade dropped below the table. It took out my favorite blade which is a Freud glue line rip full kerf. I pulled the blade from the cartridge and one tooth was stuck in the cartridge. I have read comments about people reusing a blade after an activation. I will not do that especially after seeing that tooth. So, it cost me a $75 for a blade and $95 for a new cartridge.