I tested the filament to produce better quality prints on the K1 printer. Today I tested the carbon pla filament sold by Sunlu. It seems that if you set the settings well, you can produce quite good quality results.

3D printer
K1 : https://s.click.aliexpress.com/e/_DEr...

Sunlu PLA CF fillament
https://s.click.aliexpress.com/e/_DDg...

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