Just thought some folks would benefit from a mistake I made. I designed (freecad) some garden stakes for a friend and printed them in PLA. I knew about the difference in temperature-resistance between PLA and PETG but thought: "they aren't in a hot car; they will be ok". WRONG!! See attached photo that shows what happens to identical, 13" tall, stakes (same color, same manufacturer) on an 85-degree day , outdoors, in direct sunlight. It only took about an hour for the PLA stake to wilt and bend over. I hope this helps somebody.
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PLA versus PETG
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Yep, overall, PETG is much better outdoors than PLA. For 1 thing, PETG is way more UV resistant. That said, there are some new PLA formulations that are challening both PETG & ASA for outdoor use.
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I still prefer using ABS for stuff like that. Beside the material features it is cheap, too
Last year I started a long term test using TPU. I printed white screw covers for my satellite disk pole mount and they turned from white into pee yellow within 12 month., but beside that they look and feel fine, even so they are exposed to the sun and heat all day.
My first and only PETG roll is still unopened in storageUntil I find a way to convert my TronXY X5 into an all metal version, but I can't find proper heat pipes.
Last edited by Geit; 06-26-2021, 07:01 AM.
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Originally posted by Ender5r View PostI think ABS is a fine material, & I love that it is cheap, but PETG & ASA are more resistant to UV. Interesting info re: TPU. I'm not sure why you are waiting for an all metal version of your TronXY X5 before printing PETG.
Printing PTFE would destroy the working hotend very quickly and I prefer a permanent working printer.
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