Print bends up under the nozzle

Hi,

I have a problem printing small areas that get bigger in z direction. The PLA bends up under the nozzle which builds up a "wall" of PLA that is higher than the nozzle height.
This results in a bad print. Also in worst case the wall gets so big that the nozzle collides with it causing lost steps in x or y direction and shifting the print.

I dont know what causes this.

I have no problem with first layer adhesion, so no warping. I have a Prusa Hephestos with a Diamond Hotend. Maybe someone can help.

Thanks!

It sounds like your cooling isn't adequate enough. You might want to look into a better part cooling system.

Thanks! I had auto cooling enabled in slic3r. Now I have it at 100% and it works.