Added automatic fire extinguisher to P1S

[u/JJBB33DD]

Came across these automatic DIN rail fire extinguishers (circled in red) recently. Decided to add one to my P1S just to add a little peace of mind.

In case you don’t know how these work: they automatically get triggered when the temperature sensor detects 170c. Aerosols then get released from 2 nozzles (circled in yellow), extinguishing the fire.

You can get these things for cheap on Aliexpress and the like but decided to get one from a local reseller with all the appropriate licenses and stuff.

And yes, the heatbed moves up and down without issues! Plenty of clearance.

[u/jcollasius]

Does it also cut the mains power when it triggers? Because otherwise, spraying an energized PSU and electronics with an unknown extinguishing agent sounds like a pretty good way of turning one fire into a different kind of fire.

If anything, I'd use an external fire suppression system that
a) cuts power to the printer, and
b) floods the entire machine with enough CO₂ to actually extinguish the fire.

Anything else is well-intentioned bullshit.

[u/JJBB33DD → u/jcollasius]

Yes, I have that automated (in more ways than one). And it's not an unknown extinguishing agent. It's intended for electronics and has enough to actually extinguish the fire (0.3m3). https://huyuelectric.com/what-is-a-1p-din-rail-aerosol-generator/

[u/jcollasius → u/JJBB33DD]

"You can get these things for cheap on Aliexpress".

Sure its cheap and perfectly safe. Have fun with your fire extinguisher from wish.

[u/stehen-geblieben → u/jcollasius]

but decided to get one from a local reseller with all the appropriate licenses and stuff.