if the saw stop activates someone has been a real muppet
In reality the activation can come from a number of other instances rather than just sticking your hand in the blade – thats why the cost of the replacement cartridge is an interesting question as theres are all sorts of of circumstances where you could get a accidental activation – I’m surprised its as cheap as it is frankly. Having had a live demo the energy involved is pretty astounding, (even though you are watching in anticipation its still a shock) while the cartridge destroys itself in the process I’m surprised the chassis of the saw doesnt get wrecked too.
All sorts of factors could trigger it other than fingers and frankfurters. Wet wood, nails or anything else conductive such as dibond or laminates that have a metal foil would cause the cartridge to fire if you don’t preemptively disable the cartridge. I was cutting some chipboard recently and found a chuck of bronze imbedded in it which would have set off a sawstop cartridge,
So as an owner of a saw you might have to spring for few replacement cartridges and blades (I wouldn’t trust a blade that had been subjected to that kind of shock) over the lifetime of the tool even if you keep your hands well out of harms way.