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Yes, the BMW end tanks are far stronger for a given material thickness. They are also more heat resistant than the PPA. The PPA should handle heat better than PA-6 but 3D print filaments have modifiers and such. I tested and it gets soft first.
I print in a heater chamber so it will be as strong as PPA can be…but for a given material thickness, it’s still far from an injection molded part.
That’s said, my design is absurdly overbuilt. All the math will likely show a factor of safely of 5, maybe closer to 10…but real world is a different ball game…
I’d need to redesign it for aluminim and it would kinda ruin the look….but it would be doable. I think total cost would be about $1k.
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