22

Ok, I tried all 3 materials. PLA failed after less then one day, I believe it deformed from the constant pressure and fell out (I didn't find the part but I didn't really search for it, there's some tall grass below the window) ABS lasted about a year, it fell strait down and I found the part, it looks ok if probably deformed by just a few mm so it doesn't ...


13

I printed a handle for a rather big rolling door in natural PLA (From Fabberparts) - no UV protection. It's on the weather side of the house and is exposed to direct sun half the day. And after three years cycling to all the German seasons it's still absolutely fine. Also, Wikipedia told me that PLA has good UV resistance - so you should be fine IMHO. Here ...


13

PLA would be a non-starter for outdoor use as it's biodegradable and can breakdown in sunlight. Albeit slowly, but won't be useful for long term project. ABS would be a good choice for longevity, as it can last in outdoor situations for quite a while. Its glass transition temperature is above 100 degrees celsius so it'll last in most climates. As for ...


9

PET(G) is a strong contender. It is very strong and water-resistant, and as such is often used to make pop bottles. PLA has a reputation for being "biodegradable" and therefore it is often discouraged to use PLA outside and/or in contact with water. However, PLA only biodegrades under very specific conditions which it won't generally be exposed to so it can ...


8

I might be late to the party, but I have a suggestion. Why not use ASA filament, it's the kind of plastic used in car cup holders, lawn rakes and sprinkler heads, it is both heat and cold resistant, as well as solar stable and weatherproof. As far as printing with it it is similar to printing in ABS as far as I am aware, I might be wrong though. I personally ...


5

Unless you enclose the printer fully in some way or another, I see problems, even beyond just print quality: humidity can and will end inside the printer by condensation and destroy the electronics, especially in the fall and winter months. being accessible, children from the neighborhood might get their stubby fingers into the running machine or throw off ...


4

Keep in mind that PLA has a much lower temperature point, where is starts getting flexible. I once had PLA-printed parts in my car in the summer for three hours and when I came back, they where bent. I don't know about the weather conditions in your local environment, but if you experience hot temperatures and your sign is hanging in direct sunlight, I ...


3

We use PLA in an outdoor environment, non-direct sunlight. PLA seems to be just as strong as day one. It has been about six months now. Of course, you must seal coat to protect from moisture.


2

I have several items printed in PLA that have been outdoors for about a year now. Apart from some discoloration I don't see any structural damage (yet?). Some of them are at the south side of a building so they get maximum sunlight. Of course Belgian summers can not be compared to Arizona summers!


2

I would think that ABS is a good choice if the application isn't in direct sunlight. ABS is what sprinkler lines are made from and those obviously do well under ground, though I have seen ABS that is left in the sun get super brittle over time and snap easily. PLA also will slowly melt in direct sunlight. I have seen this one firsthand, having left a print ...


1

What colour was your PLA? PLA will soften around 60C and a dark colour will easily get hotter than that in direct sun on a 30C day. Clear PLA seems to have much, much better temperature resistance, but any sort of PETG will kick it's butt in that regard.


1

ABS would be toxic, I believe (contains BPA I think) so that wouldn't be a good choice. I think PETG is safe plus UV resistant so that would be a good one. I'm not sure about PLA or other materials.


1

I think ABS would be your best bet. It's not biodegradable and realtivley easy to print. But you can use more or less any material if you use some form of coating on it. I would always go for coated PLA instead of other materials just because PLA is the easiest to print and it's nontoxic.


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