[Prusa i3] Too much extrusion, only on edges

[awanegenebayo]

Thanks a lot for your answers !

I'm having two opposite adivces here haha !

I'm currently printing at 180 for the extruder and 85 for the bed. I think the bed may be a little hotter than necessary, i'll try printing something at 75.
I will also try to significantly increase the extrusion temperature, just to see what's going on, but it seems completely at the opposite of what printbus what saying, that is layers don't have time to cool down before the next layer is made. I'll try anyway, PLA is cheap

If i can't get any improvements, i'll consider buying a fan and printing a cooling airflow piece.

Thanks again for the help !

PS : For the record, this is what most if my prints look like :
IMG_20160501_125421.jpgIMG_20160501_125433.jpg