What makes PETG the right choice for parts that see weather?
PETG is a glycol-modified copolymer. The modification slows crystallisation, so the strand fuses layer to layer far better than standard PLA, which is why a PETG bracket resists impact and moisture take-up instead of cracking along the layer lines. It also does not need a heated chamber or a high-temperature hot end: 230-260 C covers it. We do not publish UV-weathering test data for this grade, so we will not claim a service life outdoors.
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