I’m having the same quest, trying to find a filament that can stand weather and time. My best bet so far is colorFabb’s HT. It will be fine up to a 100 degrees or so. I guess the quality of the surface of the print isn’t as good as PLA but so far it’s good enough for me. I have sanded a few models and the model didn’t get soft or “sticky” while sanding to quick like PLA, I liked it a lot.
But be ware that you probably need to print it at an higher temp than the original FW let’s you use and that the PTFE coupler doesn’t like higher temps. Don’t know if you count this as extreme but I think it’s the price you have to pay.
The solution for me was tinkergnome FW and a PTFE coupler from 3D Solex that won’t mind beeing used at temperatures up to 295 degrees.
I’ve had a few models made from PLA outside in the sun for a couple of months this summer, and we have had more than 30 degrees for many of those days, I haven’t measured the temp in the sun but none of my models got soft.
It takes a little more than 50 degrees to start making PLA soft.
I guess the real killer is UV radiation. There are some sprays that states it blocks UV, haven’t tried though.
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kmanstudios 1,120
I am loving my white TPLA. How it compares to ABS, I am not sure. But much easier to print than both ABS or CPE. But, it has the same softening temp. So outside in hot days could make it soft.
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