Got it at last! I switched filament, and I have not expected how much difference the make of filament can make. I almost always used NuNus ABS, but the last time I ordered esun white ABS, and, without changing anything but the filament itself I printed http://www.thingiverse.com/thing:1225517, scaled to 50%, layer height 0.1mm, print time 1:26
Pretty results. 
Hi + Volker Klaffehn, what nozzle diameter did you use here?
@Dario_Marrini 0.4mm nozzle on cheap J-Head E3D china clone
thanks! it seems a smallest nozzle job!
@Volker_Klaffehn I wonder if it was the same clone as the one that I posted about recently.




