Heyho

I already showed in the last video what can happen if you "forget" a candle in a 3D printed holder. I also presented a constructive solution on how to theoretically prevent this burning. However, as I found the project exciting (also for other applications!), I am now comparing different materials here! All samples were printed with 3 perimeters and 20% infill to simulate as normal a scenario as possible.

Of course, this is only a snapshot and does not show all eventualities! For example, the material compositions can differ significantly depending on the manufacturer. Stability against heat and fire can also be improved if the parts are made from solid materials. However, this is rarely done in practice with 3D printing.

So: It's still true that you should never leave a fire unattended! But I think it's good to see how the materials you use could behave in an emergency!

I hope this will give you a little background about these materials in combination with fire :D

PETG (clear)
Observation: Material has not caught fire but has melted. In this scenario, the substrate could have finally caught fire if the wick had not been flooded.



ASA (Prusament)
Observation: Started burning later than PLA, but all the more intensely! If I hadn't extinguished the part, it would have burned down completely.


PETG V0 (Prusament)
PETGV0 also melts, but its self-extinguishing properties have slowed this down considerably and even extinguished the flame in tests.

Greentec Pro (Extrudr)
Observation: GreentecPro is very heat-resistant and was able to withstand the fire for a long time. In the end, however, this material also burst into flames and then burned down quickly.

PLA (+) (Chitu Systems)
Observation: This PLA was able to withstand the flame for the shortest time and then burst into flames. However, in a previous test with normal PLA from another manufacturer, I also observed the result that it only burned down in combination with the wax.




I hope that some of you will benefit from my findings and can fall back on these results if you ever produce a printed part that could theoretically come into contact with high heat or even an open flame.

Have fun!