"That $50 number seems incredibly optimistic."
It's not.
"Just the rebuild cartridge is selling for $99 right now: https://www.sawstop.com/product/standard-brake-cartridge-tsb..."
The BOM on this cartridge is not $99 or even close :)
Sawstop has said this themselves.
"And the saw frame has to be much stronger to handle the force of stopping that blade. Throwing $50 of new parts on an existing frame just means you throw the whole saw away after it triggers."
First, you are assuming sawstop mechanism. Most alternative mechanisms are closer to https://www.altendorfgroup.com/en-us/machines/altendorf-hand...
or
https://www.felder-group.com/en-us/pcs
or similar.
None of them required significant saw frame changes, and none of them require blade replacement. All have been tested repeatedly to respond and prevent injuries in the saem time (or even faster) than sawsotop.
The saw frames can already handle stopping the blade, even in job site saws (and definitely in any cast iron trunnion table saw). Please give any data that suggests it can't?
Again, i'm also telling you what the manufacturers said. Go read the discovery yourself, don't argue with me about what their own data said.
"But it probably just wet wood or something else conductive causing a false trigger."
This is wrong.
"Show me the false rate data please."
I cited it in another post, and honestly, i'm not going to spend my time trying to convince you your particular set of opinions is wrong. There are lots of people with lots of them
Why don't you do the opposite - this data is easy to find and there is a ton of it - discovery in table saw design defect lawsuits, tons of submissions and hearings in the CPSC, etc. Why don't you read a bunch of it, preferrably prior to forming and asserting strong opinions.
That's a good way to become better informed.
This thread already has plenty of misinfo in it (job site saws are a small fraction of the market, for example, despite people thinking it's the majority), it doesn't need more.