[ Manual N2&N2 Plus Series - How to Tune the Third Party PLA -V1.0 ]
The cold end cooling is related to the PLA print results on all metal hot ends. Therefore, it is important to choose the right temperature and cooling settings. Currently, Raise3D PLA is the result of special adjustments. Therefore, it will print well from the default settings. However, if you tend to use third-party PLA. You need to follow the instructions below:
• Important update: We found that some PLA filaments have soft surfaces, so they are easily scratched by extruder gears. Reducing the motor current of the extruder can gradually improve this part. Adjust the reference voltage of the extruder a4988 driver board to 0.8V (motor peak current 1A, original 1.14V peak current 1.43A).
1. Diameter Control
The diameter of the Raise3D filament is very limited. It is controlled below 1.85mm. Therefore, the diameter of the PTFE tube we use is controlled at 2.00mm + -0.05mm. We have seen some case reports showing that the filament is stuck in the PTFE tube. This can be related to the diameter of the filament used and how it is inflated in the tube. So, if you encounter this situation. You can use a 2.1 mm drill bit to expand the PTFE tube.
Secondly, the diameter of the acrylic cover and the extruder body are also designed according to the same tolerance. Therefore, it is also important to loosen the three thumb screws.
In addition, before slicing, please measure the average diameter of the filament and type it into ideaMaker.
2. Extrusion Rate
The default extrusion rate of Raise3D PLA is 94%, which is a good starting value when printing with 90% of other PLA or PLA-like polymers. Under "Edit" -> " Filament Settings" -> "Flowrate Compensation".
3. Cold end cooling
This is the most important topic when using all-metal hotends. This has a lot to do with PLA printing results. Pure PLA becomes soft at around 60°C. The softening point actually depends on the filament you use. The softening point of Raise3D PLA is higher than the average. Therefore, the cooling fan may not be enough to accommodate other PLA.
•If you only printing with PLA, but not any other filaments like ABS/PC that tends to warp under cold wind cooling, you can remove the fan duct to increase the cooling airflow.
• Look for alternative 12V models with larger air volume instead of current fans. Or try to use a 35mm * 35mm * 15mm fan instead of the current 35mm * 35mm * 10mm fan.
• Reduce the infill speed from 90mm/s to 60mm/s. That's very important.
• When printing PLA, do not cover the top cover.
[ Manual N2&N2 Plus Series - How to Tune the Third Party PLA -V1.0 ]
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