Welcome fellow prototypers! This communities' purpose is to help others and share functional 3D Printing related information. While other 3D Printing Communities are a good resource, sometimes too many help posts get buried under memes and fluff. This will remain technically focused and keep the fluff removed. Please help your fellow 3D Printer hobbyists as much as you can with their issues! and showcase your functional prints and how you use or created them.
80+ is a no-go for PLA, you might be okay if you built it beefy enough, or it was removed from the heat coming off the lamp itself.
It’s not quite as hot as sunny car interior, but it’s close enough.
But I would very much suggest going with PETG. (Or ASA,)
Thanks, I didn't realize PLA starts to soften at such mild temps. I'm not feeling brave when it comes to things mounted 12' up, so it sounds like PETG is the way to go!
Glass transition is usually somewhere around half the melting temp (which is usually printing temps), and that’s where things get really dicey.
But plastics in general will always soften a bit as they get warm and PLA is known to deform over time when exposed to sunlight (especially in car interiors,).
LEDs aren’t nearly as bad as other lights, but they can still put out enough heat they I’d worry about it across the long term.
If it was just a temporary solution, I might not be as concerned.
PLA will be fine.