PETG 3D Printing: The Default for Parts That Work Outside

PETG stands for polyethylene terephthalate glycol. It is tougher than PLA, takes UV better than ABS, and resists most household chemicals. Tensile strength sits around 50 MPa. Heat deflects at about 70 to 75 C.

Layer adhesion on PETG is very strong. Parts hold up well to twist, bend, and impact loads. This is why PETG is our default for production work.

PETG is the right pick for outdoor enclosures, fixtures that get wet, parts that ride in cars, jigs that take impact, and replacement parts for shop equipment. Most production runs we print are PETG.

We print PETG for plant maintenance teams, hardware startups doing field tests, and robotics shops who need rigid mounts.

PETG vs PLA is the most common material question we get. PLA prints cleaner and costs a little less per part. PETG is tougher, handles heat better, and resists chemicals.

Pick PLA for visual prototypes and indoor parts. Pick PETG for anything that has to work. For the PLA story, see PLA.

Skip PETG when the part needs to take heat above 75 C. Skip it when the part needs to flex like a gasket or a hinge. Skip it when the part needs maximum stiffness with low weight.

Pick ABS for heat resistance. Pick TPU for flex. Pick PA-CF for high stiffness.

PETG sits in the low end of our pricing. It costs a little more than PLA per kilogram of filament but the per-unit difference shrinks at volume. At one thousand units, PETG and PLA cost about the same per part.

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