Simplify3D User Forum

Hello everyone,

I recently purchased a FF creator pro and have been loving every second printing with simplify3d. My prints have turned out really well thus far. I have started to experiment with dual extrusion and I am having some issues. I have read many of the forums and have experimented with many different settings, but I cannot fix my stringing issues. As you can see in the image, I believe stringing is causing "bleeding" between the yellow and black filaments.

My current settings are as follows:
Layer: 0.2mm
Filament: Hatchbox PLA
Temp: 192
Retraction: 2.0mm
Retraction speed: 1600mm/min

I am using ooze shield and prime pillar. For ooze control behavior, I have "only retract when crossing open spaces" and "force retraction between layers" checked. I tried checking "min travel for retraction" at 2.0mm, but did not really see a difference in the preview; I have never printed with this setting checked. I have tried with and w/o the coast setting at 0.2mm without any luck.

Any help is appreciated.

I've used about 2mm of retraction vertical lift before which helped a lot, especially on the very top layer. It doesn't matter as much in the middle, but it can help avoid the black getting pulled across the yellow top surface.

Thanks for the suggestion, I will give it a try. Is it possible that these are not points where retraction occurs? From the preview, it looks like there is retraction, but none of the changes I have made have really made a difference with retraction settings.

The preview doesn't lie

I think the vertical lift will help, but you can also try a larger retraction distance if you want and maybe even a slightly higher retraction speed to help suck the filament back into the nozzle before moving.

Thanks for the suggestions. Vertical lift seemed to do the trick. I tried messing with retraction distance and speed, without much luck.

I also recommend turning on the Coast feature, which is like magic when it comes to reducing strings.

wfcook wrote:I also recommend turning on the Coast feature, which is like magic when it comes to reducing strings.

What would you recommend for coast settings?