Gaps in top layer. Can't find the real source.

[Floyddotnet 0]

Hello,

I hope you can help me. Regardless of which filament I use (3dJack PLA, Sunlu PLA / PLA+, AmazonBasics PLA) I have small gaps in the top layer.

 

Model: https://www.thingiverse.com/thing:3346069

 

1. extruder steps are calibrated

2. extrusion multiplier is measured and is 90%.

3. extruder is a BMG direct drive extruder (https://ali.onl/1O4O) on Hiwin linear rail

What have I tried so far without success?

1. raised the extrusion multiplier to 93% and 96

2. extrusion multiplier top layer 100%

3. fan speed of 40% and 60%.

4. line width of 0.4 and 0.44

 

• Printer & Slicer: Geetech A10 TrinagleLab Direct Drive Extruder (BMG+V6) on Hiwin Liniar Rail with 0.4mm Nozzle

• Filament Material and Brand: 3djack PLA, Sunlu PLA, Sunlu PLA+, AmazonBasics PLA

• Nozzle and Bed Temperature: 210°C / 35°C

• Print Speed: 60mm/s / 30mm/s (top layer)

• Nozzle Retraction Settings: 1mm, 40mm/s

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