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3D Printing in PETG
PETG is a widely used and appreciated 3D printing material. Compared to PLA and ABS, it stands out for its temperature resistance, being stronger than PLA but less than ABS. It begins to soften at 80ºC, while PLA softens at 70ºC and ABS at 105ºC.
In terms of strength, PETG is the most durable, being difficult to break due to better layer adhesion. Although it is less rigid than PLA and ABS, the difference with ABS is minimal. It is also important to highlight that PETG has FDA approval for food contact and is highly resistant to acidic and basic chemicals.
Advantages of PETG
When is the perfect material choice?
Excellent for shape and fit prototyping
Some flexibility under tension, it will bend instead of breaking
Medium resistance to impacts and chemicals
Prototyping of parts that may be under load or forces
Basic shapes with minimal intricate features
Printing times from the next working day!
Disadvantages of PETG
When to look for other material options
Requires supports and may affect the visual quality of the part
The surface finish can sometimes be worse than that of PLA
It can sometimes have a fibrous surface texture
It is not suitable for painting or varnishing
It is not good for capturing small details
Sanding or painting it requires more post-processing time than resin or ABS
