threads from one piece to another

Hello everyone.

I´m having this problema , very fine threads from one piece to another. I dont know what can be the reason. I calibrated the printer and the cleaned witch acetone the extruder. You can help me?.

Thank everyone.

Sorry, Im forget the picture.

It could be come form a too high extruder temp.

Did you select the right material in Z-Suite.

Did you select autofan?

Hello, onap.

Yes, yes I have take into account these parameters.I Wan to try with other materials.