Will you print your next materials on durable PETG filaments? Or a more environmentally friendly PLA?
PETG and PLA are both belong to the same category of poly-plastics. Just similar with most of FDM 3D filaments, they are all thermoplastics. It means that they will soften above a certain temperature and become solid again after cooling.
In theory, this process can be repeated without degrading the quality of the material.
PETG's physical strength and temperature tolerance are generally higher than regular PLA. Some extreme PETG blends can handle max temperatures as high as 250°C. On the other hand, when using PLA, it is usually necessary to keep the temperature of the 3D printed part below 55°C to maintain its robustness.
PETG is more suitable for outdoor, because it can better adapted to any weather conditions.But PLA needs to be painted more durable to protect it from the unstable environment.
The model can be printed more easily on a 3D printer with double extruder using PLA. This is because PLA provides a better support material than PETG. PLA is not easy to glue, but a good starting point is to look for glue that can handle polystyrene.
Biodegradable and recyclable put PLA in the first place. If placed outdoors for a long time, PLA will eventually restore its natural composition. It can also be recycled and reused to make new consumables without any loss of quality! PETG is difficult to decompose, but it can be completely recycled.
Most of us need to consider the following points when switching to PETG after printing with PLA :
The use of PLA can better adhere to the hot bed. There is no need to heat the hot bed when printing PLA, but PETG requires a bed temperature of about 50 to 70°C. At the same bed temperature as PETG, PLA has less warped edges and better adhesion to the bed.
So you have to find a reflexible solution of your own printer to fix PETG,when this finished completely, you would be more than excited !
For printing on the glass surface, a small amount of glue or some PVA glue is suitable for both of them. However, the adhesion of PETG tends to be better on the PEI printing bed.
PETG There are oftenly string and exudation. In order to reduce it, you can try to print with a lower nozzle temperature (but please not to drop the temperature too much).
The nozzle gap of PETG usually needs to be larger than that of PLA to prevent excessive bed adhesion.
If you mainly printing by PLA, you don't need to re-adjusting the PETG base height (z height) on the 3D printer but just adjusting the z height in the slicer only for a specific PETG 3D printer.
Compared with many other PLA , it PETG has a higher density , so be sure to check with the manufacturer. The common density of PLA is about 1.24 g/cm3, and the common density value of PETG is about 1.27 g/cm3.
Let's view the real feedback from some people_
When you'r goting to chang from PETG to PLA, the nozzle temperature needs to be set what of match PETG. Then the higher temperature PLA is feed into the nozzle until single PLA is extruded only.
The sequence is very important, otherwise you may run the risk of PETG clogging the nozzle at certain lower PLA temperatures.