Why is PETG tougher than PLA and what makes it moisture resistant?
PETG is a glycol-modified polyester whose molecular structure gives it real impact strength and flexibility, so it deforms under stress instead of shattering like PLA. The same chemistry resists water, moisture, and many chemicals, which is why PETG is the go-to choice for durable functional parts. This grade is rated for a 220°C print temperature.
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