PETG

WHAT IS PETG?

PETG is a modified version of PET (the most commonly used plastic in the world) The ‘G’ stands for “glycol-modified”, which is added to the material composition during polymerisation. The result is a filament that is clearer, less brittle, and easier to use than its base form of PET. Our PETG filament has the reputation of combining the functionality of ABS (stronger, temperature resistant, more durable) and reliability of PLA (easy to print) in one material.

It is food and skin safe, so it can be used in medical and food applications. In medical applications, it stands up to radiation and chemical sterilization techniques without changing colour. It is not hygroscopic and is also chemical resistant. PETG’s low shrink rate makes it ideal for large prints, or where tolerance can be an issue.

PETG has a higher melting temperature than PLA so we recommend setting your hot-end temperature between 230 and 250°C. ALWAYS use a fan with PETG as it tends to cool the filament in the hot end and help with retractions. Keep your retraction speed slow at 40mm/s or less. Set your bed temperature to 50 – 70°C. For better adhesion to glass beds, you may need to apply one coat of Glue Stick.

PHYSICAL PROPERTIES

Specific Gravity

1.27 (Test Standard – ASTM D792)

Mold Shrinkage (%)

0.3 – 0.6 (Test Standard – ASTM D955)

Hardness (R-Scale)

110 (Test Standard – ASTM D785)

Water Absorption (%)

0.2 (Test Standard – ASTM D570)

Tensile Strength at Yield (Mpa)

50 (Test Standard – ASTM D638)

Tensile Strength at Break (Mpa)

28 (Test Standard – ASTM D638)

Break Elongation (%)

140 (Test Standard – ASTM D638)

Flexural Strength at Yield (MPa)

140 (Test Standard – ASTM D790)

Izod Impact Strength (J/m)

100 (Test Standard – ASTM D256)

Heat Distortion (°C)

70 (Test Standard – ASTM D648)

Vicat Softening (°C)

83 (Test Standard – ASTM D1525)

Volume Resistivity (Ω.cm)

10 (Test Standard – ASTM D257)

Download Data Sheet

PRINTER SETTINGS

Spool Net Weight:
1kg

Diameter:
1.75mm ± 0.05mm

Print Temperature:
220-250°C

Print Speed:
40-80mm/s

HOW TO FINISH MY MODELS

FILLING
Wearing protective gear, apply Incredafill in thin layers.

CURING
Cure each layer for about 5 minutes using the UV light.

SANDING
Sand your model using a coarse grit sandpaper.

FILLER
Apply thin coats of spray filler.

SANDING
Sand using a thin grain sandpaper. Repeat the whole process until you achieve a smooth finish.

PAINT
Apply paint in thin layer and wait for it to dry between layers. Remove masking tape when paint is still wet.

APPLICATION & TIPS

Great all-around material that truly stands out due to its flexibility, strength, temperature and impact resistance.

Food and skin safe, so it can be used in medical and food applications.

PETG’s low shrink rate makes it ideal for large prints, or where tolerance can be an issue.

For good adhesion to the print bed and easy removal, we recommend installing a WHAM BAM Flexible Build System on your FDM Printer.

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