I made this cage for the AFO ball fire suppression system. The original Stl was for a lightbulb safety cage by befreeman. Basically, it holds the extinguisher ball and can be mounted in your enclosure. It is just an extra precaution for those long overnight prints. I haven't tested the extinguisher yet. From what I do know, it makes a loud bang when ejecting the powder, it should be enough to wake me up if there's a fire. If you have multiple printers, it may be a good idea to have them separated somehow so this thing doesn't cover the others in powder.

The only issue I ran into was the top edges of the arches, they tend to curl up a little as they cool and end up hitting the nozzle. So far it hasn't broken any pieces just knocked against them and left some excess filament in those locations. The cage is mounted with the ball inside and secured with 4 wood screws the holes are a 5mm diameter.

I bought the ball itself from Amazon at this link https://www.amazon.com/dp/B074KZDNKY/ref=cm_sw_r_as_gl_apa_glt_fabc_GDKR1CR9Y1XESMK5FMNZ?_encoding=UTF8&psc=1&linkCode=ml1&tag=johnfullerton-20

They have a few youtube videos of their use as well, I've seen a couple where the ball does its job and a couple where the fire was too much for it.

I printed the bracket on a Prusa i3 MK2 MMU
Layer Height: 0.35mm
Nozzle Diameter: 0.6mm
Nozzle Temp: 220c
Bed Temp: 73c
Infill: 5%
Walls: 3
Top Layers: 3
Bottom Layers: 3
Print with a brim.

I printed the file unsupported and it takes about 5 hours and 32 minutes to print.