Frequently Asked Questions (FAQs)
1. Is PETG better than PLA?
PETG and PLA have different properties and applications. PETG is stronger and more resilient, making it suitable for objects that may experience stress. PLA is commonly used for FDM/FFF printing due to its better melt and cooling properties. PETG is also more expensive than PLA.
2. What is PETG filament best for?
PETG filament is a versatile material known for its flexibility, strength, temperature resistance, and impact resistance. It is ideal for 3D printing objects that might experience sustained or sudden stress, such as mechanical parts, 3D printer components, and protective components.
3. What is PETG good for 3D printing?
PETG is a popular choice for 3D printing due to its strength, durability, and flexibility. Unlike PET, PETG is less prone to becoming brittle when printed. However, it is important to note that PETG is not biodegradable like PLA, as it is made from oil-based polymers.
4. What are the downsides to PETG?
PETG is more sensitive to print speed compared to PLA. High print speeds can cause newly extruded material to not stick properly to the layer below. Additionally, PETG is more prone to stringing. PLA has better adhesion and lower viscosity, allowing for faster build speeds.
5. Why is PETG so hard to print with?
PETG can be challenging to print with due to its tendency to string and the risk of delamination with excessive cooling. Adjusting print settings, such as decreasing fan speeds or increasing print temperature, can help improve print quality and adhesion.
6. What are three disadvantages of PETG vs PLA?
Three disadvantages of PETG compared to PLA are: 1) Bed adhesion is generally harder to achieve with PETG. 2) Stringing and oozing may occur due to excessive retraction. 3) PETG is not the best choice for bridging compared to ABS.
7. Why not to use PETG?
PETG may not be suitable for all printers due to its high printing temperature requirements. It can also present challenges with over-adhesion and stringing, making it more difficult to work with compared to other materials.