How to get clean color edge transition

[byMH62]

Hello, X1C with AMS here doing multicolor print with .4mm nozzle.

The picture is zoomed in on a pretty small surface about 12mm wide edge-to-edge and as a reference, the red border around the white background is one line width (.4mm). As shown, the transition between back and white is not exactly clean, looks like leftover fuzz. I tried printing black before white then white before black but got a similar mess.

Any suggestions to clean this up?

[Ruby_in_Wyoming]

Increase the flushing volumes.

[byMH62]

I’m not seeing color bleed which would benefit from increased flush volumes, I’m seeing fuzz or hair left behind by the nozzle which later gets trapped under the new color being printed. The model is printing face down so the picture is the bottom layer.

I’m circling here the trouble areas:

Top picture printed black then white, bottom white then black.

[L0rdS474n]

Just gathering some additional information to better understand the issue.

• Are you using a purge tower?
• Have you calibrated your filaments?
• Have your filaments been properly dried?

[jetpad]

There’s a few settings that you should try from my print profile for this coaster. Coaster: “Not my circus, not my monkeys” by jetpadMakerWorld: Download Free 3D Models and for this one
'Not My Circus, Not My Monkeys' - Multilingual by jetpadMakerWorld: Download Free 3D Models
The second one I spent more time on trying to improve it but still didn’t resolve all the issues.
The settings that I think helped were

• Do the white before black
• Detect thin wall
• Avoid crossing walls
• Print infill first
• Only one wall on first layer
• Outer wall width: 0.22 mm
• Outer wall speed 50 mm/s
• Gap Infill speed 150 mm/s

[byMH62]

Yes , Yes , Yes.
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[byMH62]

Thanks. Some of those I already have and I’ll try the rest today.

[Neiljt]

Have the colours been painted ? i found the printer (A1) will pick up every wobbly line or miss spray and print it as it is (shown in geometry)
, unless they have a border to infil (extruded parts like lettering)

[byMH62]

Each color is a separate STL part. Lines are straight.

[lkraus]

I think the black and white bits that are out of place are inadequate purging, or filament stuck to the nozzle and falling off.

I doubt the nozzle is creating the wavy red/white transition, which is probably the result of using a textured plate. Filament is pressed into the randomly placed “hills” and flows in the direction of the slope.