Anet A8 bad/inconsistent extrusion after changing nozzle I just changed my nozzle on my Anet A8 after it was fully used up. When I started printing with my new 0.4&nbsp;mm nozzle (same as before) my extrusion was VERY bad and inconsistent, even so bad I couldn't continue printing because it would pull the first layer off. 

If I compare it to my extrusion before the nozzle switch, it is really bad, even though I tightened everything as before. I am quite sure it doesn't have to do with adhesion to the heated bed since I use tape with PVA glue. 

Any advice on how to remove this under extrusion so I can continue printing?

All the specs:


25&nbsp;mm/s first layer print speed
200&nbsp;&deg;C nozzle
60&nbsp;&deg;C bed
PLA filament;
0.4&nbsp;mm nozzle size


Let me know if there is anything else you need to know.
To be sure it's from your nozzle / extrusion mecanism, you could check calibration by extruding (in the air) 100mm of filament, and check how much it really uses. If it uses 100mm (or so), then the problem comes from any other parts (bed, filament feeding...).

If this is really an extrusion problem, first you can check again your extrusion step motor gear. If it's ok, then you could put back your old nozzle to ensure the new one is the problem... If all is ok with the old one, then yous should have something in your new one, or it's not a .4mm ?