First layer problems

[Epiphastro]

Hi all,

I am pretty new to 3d printing. Recently I encountered problems printing larger structures on my A30 (See pictures attached). For investigation I printed a test model which is 1mm thick and covers all relevant areas of the printbed. As you can see there are holes in the first layer which lead to problems in later layer. Sometimes the filament also seems to crumble on the first layer. If this would occur in corners or on one side only, I would assume a leveling problem. But it occurs in between as you can see. It does occur independently from the filament (all original Geetech). Although the white filament did perform worse than the red one. But both show the problem.
I would really appreciate any ideas what to try to fix this.

Best regards

Frank

[William]

Hello, in response to your question. There are several suggestions:
1.Try to adjust the filament diameter to 1.75mm.
2. Slightly increase the extrusion ratio.
3. Increase the filling percentage.
4. Change to a slicing software, sometimes the printing effect will be significantly improved.
5. You can refer to the link below for help.
viewtopic.php?f=26&t=17183
Regards