Support Filament --> PETG for PLA and PLA for PETG and more (2024)

FAQs

What support material to use for PETG? ›

To ensure optimal adhesion of PETG, it is recommended to apply a layer of glue to the build plate before printing. Learn more about using the glue stick in this article. PVA is the recommended support material for PETG, although SR-30 can also be used when working with the 2XA extruder.

PVA is the most compatible support filament for PLA because of its water solubility, easy adhesion, and print temperature compatibility.

Yes, you can use both PLA and PETG on the same 3D printer. However, you may need to adjust the printer settings such as the printing temperature and speed to suit the material you are using. It is also important to clean the printer nozzle when switching between different materials to prevent cross-contamination.

This guide introduces beginners to the world of 3D printing, focusing on the choice between PLA and PETG filaments. PLA, derived from natural sources, is eco-friendly and biodegradable. PETG, born from PET with glycol infusion, offers enhanced strength and durability, making it 100% recyclable.

PETG has good layer adhesion. While it's helpful for your parts, it can present a challenge for support structures. The supports might stick too well to your parts and be difficult to remove. Keep a 0.1-0.2 mm distance between your supports and 3D prints.

It is a special filament that is much more easy to break and remove then normal PLA. It is only for supports and like most support filaments should only be used for the interface layers, not the entire support. It is not water dissolvable though, just easy breakaway.

It's not a coincidence that brass nozzles are the most common, as they are also great for printing general materials like PLA and ABS. This is mainly because brass nozzles have exceptional thermal conductivity and stability, which is why it is recommended to use them if it is a possibility for your material.

PETG is used for the manufacture of this buoy, due to its low water absorption and low degradation, which allows it to maintain its dimensional stability and integrity.

PETG filament is highly durable and impact-resistant, making it great for outdoor applications that may take a beating. PETG has excellent flexibility, meaning it can withstand extreme temperatures without warping or cracking.

Does PETG absorb moisture? ›

Therefore, it must be stored properly to maintain the quality of the material. PETG absorbs moisture from the air, which means it is hygroscopic. If the 3D filament is exposed to high humidity for a long time, the quality of the print as well as the mechanical properties will strongly deteriorate.

PETG is more sensitive to print speed than PLA. Newly extruded material may not stick to the layer below or the last strands if the print speed is high. PLA is more sticky, due to its lower viscosity. This results in PETG model build speeds being lower than those of PLA.

RE: How to strengthen the connection of the material at the edges with PETG? Turn your print temperatures up and/or use less cooling.

Heatbed: Using powder-coated TXT or satin sheet is highly recommended. Printing on smooth PEI surface might damage the sheet.

Heat Management: PETG requires a moderate temperature, usually between 230-250°C, for good layer bonding. Cooling: Unlike PLA, PETG doesn't need aggressive cooling. Setting the fan to a lower speed can prevent layer separation and maintain the strength of the print.

The ideal print speed for PETG filaments should be above 50 mm/s. Keep it around 60-80 mm/s for better PETG prints. Anything higher than this can cause stringing or the corners of the print may come off. Printing below 50 mm/s can cause PETG filaments to ooze out.