PET - Material Guide | Craftcloud®

Material

PET

PET 3D prints offer a strong balance of toughness, chemical resistance, and dimensional stability. The material produces durable parts with good layer adhesion and a semi-gloss surface finish.

Manufacturing processes

FDM

About

PET (Polyethylene Terephthalate) is a durable thermoplastic widely used in FDM 3D printing for functional and semi-structural parts. It combines good mechanical strength with chemical resistance and low moisture absorption compared to many other common filaments. PET prints typically show strong layer bonding, reducing the risk of delamination under load.

The material offers good impact resistance and maintains dimensional stability across moderate temperature ranges. Its surface finish is usually smooth with a slight sheen, depending on print settings. PET is less brittle than PLA and generally easier to print than more advanced engineering polymers, making it a practical option for brackets, housings, mechanical fixtures, and general-purpose functional components.

Technical Details

Accuracy ±0.3% (lower limit of ±0.2 mm)
Density 1.3 g/cm³
Min. wall thickness 1 mm

Technical Properties

Tensile strength 45 - 60 MPa
Tensile modulus 2000 - 2700 MPa
Tensile elongation 5 - 15%
Flexural strength 70 - 90 MPa
Flexural modulus 2000 - 2800 MPa
Default layer height 0.2 mm
Default infill 20%
Embossing min. 0.4 mm
Engraving min. 0.4 mm
Warping risk Moderate
Maximum printing dimensions 350 × 350 × 350 mm

Finishes

Properties

Colors

Black
White
Blue
Yellow
Red
Orange
Gray
Green
Translucent