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Uv stable filament?

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I printed a knob for something outdoors. It has not changed color in a year now.

If you google "pla outdoor" I think you will find other people who have done better experiments and you will find that PLA does very well outdoors. Better than ABS I think.

 

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And cheap filament uses dyes that breaks down in UV light.

(I know Ultimaker and Faberdashery filament do not have this problem. And I would expect most other quality stuff also does not have this problem)

 

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