alt Hacker NewsAt a glance, that looks like worse than merely the negligence of using a new technology.
The whole point of 3D printing is that the material is moldable when hot but rigid when it cools. And people really should be aware that engines get hot.
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I think there's some nuance missing here. "Hot" is a scale, not just a true/false check.
Apparently they thought it's ok because the published glass transition temp is higher than the epoxy used for fiberglass construction
>The whole point of 3D printing is that the material is moldable when hot but rigid when it cools.
Which means what exactly? Aluminum will go soft under high temperatures as well, yet this part would not have failed if it was made out of aluminum.
The failure is not the material, the failure is someone neglecting the operating conditions or material properties when choosing materials.
This exact part could have also been milled out of some plastic and would have failed the same way. The method to produce that part is only relevant in so far it is open to more people.
I think the main issue is that many filament manufacturers mislead or outright lie about their filament capabilities.
Bought it at a get-together.
Like gunshows, it’s a magnet for bad ideas.
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Looks like the part was advertised as ABS-CF, but may have actually been PLA-CF, which makes a big difference.
There are plenty of even higher temperature materials that can be 3d-printed. PAHT-CF is fine at fairly high temperatures (the nozzle temperature needs to be over 260C), and SLS printers can print things like aluminum.