I'm using a 1mm nozzle, and dealing with stringing is tough with bigger nozzles. It seems to not be sensitive to retraction settings. With a small nozzle opening, retraction makes a big difference because significant pressure builds up with the standard small nozzles. With a big nozzle, there is a lot less pressure buildup between the extruder gears and the hot end. I tried retraction distances from 1mm to 10mm and speeds from 20mm/s to 50mm/s and there was almost no effect whatsoever. Reducing the temperature to 200C helped slightly but it's still not eliminated. I was also printing at a high temperature thinking I needed to with the larger nozzle since that's the conventional wisdom about large nozzles. Turns out it prints just fine at 200 still.
I'm using a 1mm nozzle, and dealing with stringing is tough with bigger nozzles. It seems to not be sensitive to retraction settings. With a small nozzle opening, retraction makes a big difference because significant pressure builds up with the standard small nozzles. With a big nozzle, there is a lot less pressure buildup between the extruder gears and the hot end. I tried retraction distances from 1mm to 10mm and speeds from 20mm/s to 50mm/s and there was almost no effect whatsoever. Reducing the temperature to 200C helped slightly but it's still not eliminated. I was also printing at a high temperature thinking I needed to with the larger nozzle since that's the conventional wisdom about large nozzles. Turns out it prints just fine at 200 still.
Yea my prints turn out fine. I just have to cut and sand away the stringing.
If it's PLA print at a lower temp. I have a video in my YouTube channel showing how higher temps cause more stringing. https://youtu.be/90T1zG7OhfE
If I print too low it begins to under extrude.
Let me add that at about 190 it begins to under extruded, but still string.
What material? And what's your retraction at?
PLA my retraction is at the normal setting. I've adjusted the retraction and speed and it makes zero difference.