3D printing with PLA - the most popular printing material
PLA or polyactide is one of the most popular printing materials. 3D printing with PLA is popular because there is little shrinkage, so it's easy to print, the material is based on renewable resources, it's cheap, and it doesn't emit toxic fumes during printing. Above all, this makes it ideal for 3D printing for beginners.
ABS is also a common material, compared to PLA it has the advantage of higher thermal and mechanical resilience. On the other hand, it is more difficult to print due to the strong tendency to shrink. In addition, harmful vapors are produced during printing, which is why it should only be printed with a suitable air filter system.
High-temperature PLA meets the highest requirements
3D printing with PLA has numerous advantages:
- Biodegradable
- Ideally suited for beginners
- Environmentally friendly production
- Barely perceptible smells
The biggest weakness of regular PLA filament is the low temperature resistance. PLA components can usually only be used up to a maximum of 50-60°C. Furthermore, regular PLA has a low notched impact strength and therefore tends to brittle fracture. These negative properties can be circumvented by further developed PLA formulations, the best example of this is Multec PLA-HT. This can also be used at higher temperatures (up to 90°C) and has a notched impact strength that is approx. 10 times higher than that of normal PLA. To avoid this, Multec 3D printing with the new high-temperature PLA. As a result, this PLA is also suitable for use at higher temperatures. In addition, this PLA has a notched impact strength ten times higher than that of conventional PLA.
Are you interested? Then take a look at our application examples . If you have any questions about 3D printing with PLA, please contact us at any time. We're here to help.
PLA printing temperature is crucial for successful 3D printing
In order to achieve optimal printing results, the temperature of the print bed and the extruder must be set for 3D printing. Because too high or too low a temperature can very often lead to printing errors when 3D printing with PLA. However, PLA has the advantage that it has a significantly larger temperature range compared to other filaments. Accordingly, the following temperature is best for 3D printing with PLA:
- At the extruder between 180 and 230 degrees Celsius
- At the print bed between 20 and 60 degrees Celsius
In order to find the optimal temperature for 3D printing with PLA, you should use the manufacturer's information as a guideline and gain printing experience with the material yourself. Many 3D fans use temp towers to find the best temperature. The temperature varies while the same structure is printed in just one printing process.
Temperature setting too high when 3D printing with PLA
As the temperature increases during 3D printing with PLA, the heated PLA will eventually reach its maximum viscosity. At that moment, the filament will start to burn as carbonization occurs.
If the temperature is set too high, this affects 3D printing with PLA in the sense that the filament becomes too liquid and drips out of the HotEnd. This can cause blob artifacts, for example.
In addition, if the temperatures of 3D printing with PLA are too high, unwanted filament threads can form, which are referred to as stringing.
Heat creep clogging can also be the result of too high a temperature when 3D printing with PLA. This means that the material softens up to the cold area of the hotend and thus clogs the entire hotend. To prevent this, the printing temperature must be lowered and/or the hotend fans must be strengthened.
Consequences of too low PLA temperature
Too low a temperature when 3D printing with PLA can lead to poor layer adhesion. The PLA, which is too cold in this case, fuses improperly with the lower layer.
If the temperature is low when 3D printing with PLA, this causes the filament to become more viscous. At a certain moment, the viscous PLA will no longer be able to be extruded and the printing process will fail.
The high back pressure of the insufficiently heated material means that the feed wheel of the extruder "mills" into the material and high slippage occurs. As a result, further promotion of the filament is no longer possible.