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Fire Extinguisher Ball Holder for Prusa Printers — zdjęcie 1
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Fire Extinguisher Ball Holder for Prusa Printers

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My own version of a Prusa fire suppression system using a Mini Auto Fire Extinguisher Ball.

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Printables
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For those of us outside the EU (thanks Brexit), when we get the Prusa enclosure, we can't get the fire suppression system. I started searching for alternatives and I found the Mini Auto Fire Extinguisher Ball: https://amzn.to/415CXI9. This is a ball that explodes when exposed to flame at 70C for 3 to 5 seconds and it's full of fire extinguishing powder. Now all I needed to do was mount it.

I designed a basket to mount it on top of the Prusa MK3S+ but hopefully it'll work in others if the main frame has the same width. I made the frame as thin as possible to make sure the powder would go down, but I haven't tested it and I imagine if it's in the enclosure, it won't matter to much, it'll go everywhere.

I printed it in PLA, but it might be better to print in PETG. I don't know if the enclosure can get hot enough to make the ball drop without having a fire. If there's a fire it might also be a problem for triggering the ball that it falls down and rolls out of the flames before being activated.

I included the Fusion 360 file in case you need to alter the diameter of the ball or the width of the beam it clamps onto. If there's another common size that's needed, let me know and I can generate the STLs and 3MFs files for it and include them since not everyone has Fusion 360.