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PLA bodies and parts in the sun?

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PLA bodies and parts in the sun?

Old 09-10-2022, 09:05 PM
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Default PLA bodies and parts in the sun?

How well are PLA parts holding up in the sun? I've been printing some parts in PLA, and today I put one of them into the sun to help the putty dry and the piece warped. I've been trying to print those parts in PETG and so far I haven't been able to get one good print. Until I can get over the PETG learning curve, I want to keep printing with PLA. As long as I don't stay in the sun too long and set parts on the black tonneau cover of my truck like I did with this part, will my PLA parts keep their shape?
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Old 09-11-2022, 06:32 AM
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The glass transition point of most pla's is around 60-65 C (130-140 F). I do mainly smaller scale stuff (1/24, 1/36) but recently printed out a 1/10 drag car.. Just sitting out in the sun darker colors will get hot enough to warp, so I try and keep things light colored as not to absorb heat .. That said I am still running a lexan shell on the drag car so none of the black printed plastics are actually directly exposed to the sun ..
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Old 12-26-2022, 07:13 AM
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i think PETG is a better solution. For some parts, ABS or nylon might be considered as well.
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