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Multicolor infill pattern  

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floh
 floh
(@floh)
Trusted Member
Multicolor infill pattern

Hi everybody,

just got a failed print:

There you can see that two parts (of one color) unpeeled and thus the print failed. Both filaments are PLA (both Prusament).

Here is the screenshot of the layer (estimated height):

Questions:

Why are such weird infill-patterns created if I paint the outer wall with a different color? Can we avoid that since it uses a lot more time and materials? I think with this pattern they're trying to avoid such print failure that a print color (material) will unpeel. Am I right? Is there a better approach?

I am also wondering how I can avoid that one color bit unpeels. For your information, the white lines are slightly inside of the wall:

Any help would be much appreciated.

Best regards
Floh

Veröffentlicht : 21/01/2025 12:26 pm
floh
 floh
(@floh)
Trusted Member
Themenstarter answered:
RE: Multicolor infill pattern

This is the pattern I wish to print if doing multicolor:

Veröffentlicht : 21/01/2025 12:35 pm
BaconFase
(@baconfase)
Reputable Member
RE: Multicolor infill pattern

The painter works by slicing up a model from the borders you paint towards the center of the model. That's where those extra internal perimeters come from. You can use the "Maximum width of a segmented region" parameter to manually set how far into the model that these perimeters extend. It's supposed to help because small perimeters have a higher tendency to not look as nice as longer ones. Straight lines like that are pretty quick to print, so you may not save as much time as you'd think.

Harder to say why your print failed. But since it looks like white stopped printing for several layers while grey kept going, my guess is its a local hardware issue like your white extruder clogged or something.

XL-5T, MK3S MMU3 || Printing with multiple nozzle-sizes: Official Guide, Unofficial || PrusaSlicer Fork || Other advanced slicer tactics || TPU

Veröffentlicht : 08/02/2025 5:33 am
floh
 floh
(@floh)
Trusted Member
Themenstarter answered:
RE:

Hi BaconFase,

Thank you for your reply. I did several tests and found that the white filament has a rougher surface, which increases friction in the tube. As a result, it caused under-extrusion. I solved this by shortening the tube between the filament dryer and the input of the Prusa XL. Now, it prints white filament without issues (fingers crossed).

"Maximum width of a segmented region" is exactly what I was looking for. Thank you very much!

I’m now printing with a different approach (4th attempt). I removed the painting and added four Generic-Boxes—one on each side—each with a depth of about 5mm. There, I set the option for Extrusion (the white one). I increased the wall thickness (from 3 to 5 layers). Then, I painted the grey areas on the wall. Now, it looks like this, and the print duration has been reduced by 5 hours (from 2d 7h to 2d 2h), with lesser filament usage (from 566,59g to 468.58g). Also no more weird infill pattern.

The good thing is, after 3 failures I learned a lot about multi material slicing/printing in this project.

Best regards
Floh

Diese r Beitrag wurde geändert Vor 2 months von floh
Veröffentlicht : 08/02/2025 11:10 pm
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