Stuttering Noise of Nozzle Grinding.

[spooner777 0]

Sometimes the Nozzle grinds over the printed surface and that creates a really bad surface texture inside and outside. Yesterday I printed the same object twice. At first, the nozzle grinded over the surface and it was really bad. The second time I reduced the temperatrue to 195°C and it worked absolutly fine. Today I printet another object with the same setting and again it grinded and looks horrible.

I thought it is an under extrusion problem but that does not make sense since both times the settings were the same.

The surface actually lukes a bit like this but with sharper edges:

http://static.zoonar.de/img/www_reposit ... 841df0.jpg

 

I use Cura/ High Quality / New Extruder and Hot End