3D Printing Materials

We print in four main plastics. If you're not sure which one you need, tell us what the part does and where it lives, and we'll pick. The order page shows which materials and colors are in stock right now.

Wall of PLA and PETG filament spools in the OnePiecePrints shop in Olalla, WA

Material Best for Heat Outdoors Flexible
PLA Prototypes, display pieces, indoor parts Low (softens around 55 to 60 °C) No No
PETG Functional parts, brackets, fittings Medium (around 75 to 80 °C) Some Slightly
TPU Gaskets, bumpers, grips, seals Medium Some Yes, rubber-like
ASA Outdoor, marine, car interiors High (around 95 to 100 °C) Yes, UV resistant No

PLA

The default for most first prints. Stiff, crisp detail, the widest color range and the lowest price. It softens in a hot car or direct summer sun, so keep it indoors.

PETG

Tougher and less brittle than PLA, and it holds up to water and many chemicals. Our go-to for brackets, clips, knobs and rigid threaded fittings.

TPU

Flexible and rubbery. Good for gaskets, bumpers, feet, grips, phone cases and hose barbs that seal by stretching over the hose. Prints slower, so it costs a little more. We keep separate hotends just for TPU.

Labeled spare hotends with 0.2 to 0.8 mm nozzles, including hotends kept only for TPU

ASA

Made for the outdoors. ASA resists UV light and heat much better than PLA or PETG, so it's our pick for boat hardware, exterior fixtures and parts that live in a car.

Choosing quickly

  • Just checking size or looks? PLA.
  • Needs to take a hit or get wet? PETG.
  • Needs to bend, seal or grip? TPU.
  • Lives outside, on a boat, or in a car? ASA.

More detail: PLA vs PETG vs TPU vs ASA · Best plastics for marine parts · Resin printing

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