I did activate the retraction, but got the same result.
Maybe it has to do with the cura slicer?
I need to slice the models in cura, because of the 0.6mm nozzle.
Did you have problems before switching to the steel nozzle? If not, was the previous nozzle the same diameter? Steel doesn’t have as good thermal conductivity as brass which means the temperature reported by the thermistor isn’t the actual temperature of the nozzle. But I somehow doubt that’s the problem. Try using a different filament and dry it before use, if problem persists then it eliminates filament as the issue. Do try to use cura regardless since you have a different nozzle diameter.
Going with @Blockmodule here.
Those are very low temps.
I run 235C for dark PLA and 225 for mid colours then 215-220 for lighter colours.
Bed is always around 65C
Very few issues with contraction or warping here so a few extra degrees will almost certainly be worth trying.
The biggest factor when I get stringing has always been moisture. Try drying your filament in a dehydrator over night. I store my filament in a sealed box now with a Eva-dry E-500.
Thanks for all the advices.
It seemed to be the moisture in the filament. I used a brand new spool and the result was much better. I also dryed the oder spools, also better results.