MultiColor not Crisp/clean

Bambu Lab H2 Series
1

I’m not sure if this is the right spot to post this but I figured I would start here since it’s on an H2C . I’m I just printed a multi color model using 6 different colors plus BL support interface for PLA/petg. The support interface material was in the left nozzle and the 6 colors (PLA) were in the right. All of the colors printed well except for the green which had a lot of Black bleeding into it.

Sliced model

Screenshot 2026-04-26 084559
Screenshot 2026-04-26 0845591896×999 349 KB

Printed Model

20260424_092216
20260424_0922161733×2053 599 KB

It doesn’t show up well in the pic but all of the green appears to be mixed with black.

Any ideas what is going on here? I wouldn’t think it would be a flushing issue as there are 6 colors and 6 nozzles on the right side but I don’t know.

2

In the global setting for supports, did you choose to use the support filament loaded in the left nozzle? It looks like your supports are not being printed using the correct filament.

3

I am just using the support filament for the interface layer

4

How small are the green objects, which wall generator are you using.

5

The green parts are pretty small a few millimeters. I’m using Classic Wall Generator

6

Would it be worth trying arachne?

7

I know there are different purposes for the different wall types but I don’t know really much about it but since you mention it I’ll look into it and see if maybe that might help, thank you