PETG

What is PETG filament and why is it so popular?

PETG filament is one of the most popular materials for desktop 3D printing. The abbreviation PETG stands for polyethylene terephthalate, modified with glycol. Whether you call it PETG filament or PETG 3D printing filament, this thermoplastic polymer combines some of the best qualities of PLA and ABS. This means you get a material that is almost as easy to print as PLA, but with mechanical properties and durability close to those of ABS.

Advantages of PETG over PLA and ABS: PETG has higher impact resistance and flexibility than PLA, which means that printed models will not break easily when dropped or bent. Compared to ABS, PETG is easier to print – it hardly shrinks during cooling and rarely warps, even without an enclosed chamber. Additionally, PETG does not emit a strong unpleasant odor during printing (unlike ABS) and has no toxic fumes, making it safer to work with at home. PETG outperforms PLA in heat resistance – it maintains stability at higher temperatures (around 70-80°C, compared to ~50-60°C for PLA). With PETG, you get an excellent balance between strength, durability, and ease of printing.

How to print with PETG: settings and tips

PETG filament is characterized by a relatively easy printing process, but the best results are achieved with the following settings and conditions:

• Printing temperature (nozzle): Usually around 230°–250°C (according to the manufacturer's recommendations).
• Temperature on the heated platform: It is recommended that the bed be heated to ~70°–80°C for secure adhesion of the first layer. Attention: PETG adheres very strongly to glass or PEI – apply a thin layer of glue as a separator to avoid damaging the surface when removing the model.
• Cooling fan: Start with the fan at about 20-30% after the first layer. Excessive cooling can weaken the adhesion between layers, which is why PETG is usually printed with minimal or moderate cooling.

Properties of PETG: durability, impact resistance, chemical resistance, and temperature resistance

One of the reasons PETG is a preferred filament for 3D printing is the excellent quality of the finished models. Objects printed with PETG combine strength and flexibility, making them suitable for functional and technical applications:

• Mechanical strength and impact resistance: PETG models are extremely durable. They can withstand impact or dropping without breaking, as the material has some flexibility (it is not brittle). This makes it ideal for parts subjected to stress.
• Chemical resistance: PETG is resistant to a variety of chemicals – water, many acids, bases, and oils. As a result, printed parts made of PETG can be used for vessels, containers, or technical elements exposed to chemicals, where PLA would degrade or deform.
• Heat resistance: Compared to PLA, PETG can withstand higher working temperatures before it starts to soften. PETG objects retain their shape at temperatures up to around 75-80°C, making them suitable for use in warmer environments (for example, in a car), where PLA would soften.

Proposed brands of PETG filaments at 3DLarge

In this category, you will find PETG filaments from the following manufacturers:

• Polymaker – a world-renowned manufacturer of 3D materials. The PolyLite PETG series offers a reliable standard PETG filament with an excellent balance between quality and price. Polymaker also has specialized variants of PETG (e.g., with carbon fibers or ESD protection) for specific applications.
• 3DPower – a brand offering the affordable Basic PET-G series. 3DPower PETG is characterized by a good price-quality ratio and is ideal for functional parts, as it is strong yet easy to print.

Through these brands, we offer a variety of colors and types of PETG filament. All products in the PETG category are guaranteed quality and are stored under optimal conditions.