MrBackup

@gr5 I managed to solve it! By reducing the hot end temperature from 205°c to 190°c the sub extrusion practically disappeared. After that, just a few small adjustments to the speed of the outer wall to print slower and problem solved! thank you very much

Regarding the z axis, I even bought those "oldham couplings" to make the change (they haven't arrived yet). The strange thing is that the problem only happens after the seams, and in some pieces this problem doesn't even appear. The horizontal lines in the photos look more marked than they really are, but they are still there, I don't doubt that the cause of this underextrusion is the z-axis. I'm waiting for the new couplings to test I'm going to test printing very slowly (30mm/s) to see if this possibly compensates for the unregulated z axis. until these new couplings arrive, maybe right? I will update here thanks for now @gr5

Hello @kulfuerst, I don't speak English so I'm using Google Translate, so excuse my language. I believe I'm experiencing the same underextrusion problem after the z seam, I've already tried several configurations without success. I read your post but it wasn't clear which setting I should actually change. can you help me please? the rest of the print is very good in my opinion, the problem is really this underextrusion after the z seam