Slicing Diagonal Muti-Color Lines

Hey all, just wanted to ask if there is any way of avoiding the following ?

I am trying to print a flat surface made of multiple parts in mult-color. These are a collection of diagonal lines.

However, during slicing the slicer creates horizontal lines on certain layers. Normally this wouldn’t be so much of a problem, however the yellow PLA basic I’m using for those sections is slightly transparent when thin, resulting in those horizontal lines from being visible through the top surface.

Is there any setting I can use to prevent this from occuring during slicing ?

Layer 1 is diagonal

By layer 5 its horizontal

and by the top layer its back to diagonal.

Many thanks for any help!

Are you able to upload your .3mf file for this project?

It looks like you have HIGH wall count. I have seen this cause slicing problems/irregularities in the past. Try using a wall count of say 3 and a high value for the infill.

Hi Jon, many thanks for the reply. Wall count on this is just 2 loops at the moment. Have attached the 3MF if its any help!
STRIPES.3mf (86.4 KB)

I can’t for the life of me figure out what is causing this. I can’t get it to slice how it “should”.

Perhaps one of the other regulars will see something I missed.

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Thanks for giving it a try appreciate the help

Try this: increase top and bottom layers until it goes away is my best guess. I think that will make it translate the pattern throughout the solid.

Edit: and use arachne wall generation. Seems to help a bit.

I don’t know if this data helps but if you scale it up it get’s worse but if you scale it down it goes away. I tried all sorts of settings and several different profiles but I couldn’t get it to go away.

Try this one.

I had no problem slicing it as you like, at least from what i understood.
STRIPES.3mf (86.4 KB)

I got that far but if you look at the profile on Z you’ll see the prepare tab the stripes are crisp, but then they become all rounded over the edge when sliced. I found that odd.

That one is doing it for me too on certain layers. Check out the 3rd layer.

Yeah, but that won’t/can’t be fixed on the 3rd and 4th layer because it’s infilling the way it was designed. The stripes are not really straight, they are diagonal with the edges. And the slicer sees that as a line on the side and not in center like the other ones because it must do that “curve” inside to maintain the design. The only way to do it is when designing, from my point of view, is making every height of 0.2m a separate body and then assembling them together in the slicer. That way the infill will respect the intended design.

Don’t know if i explained it correctly, but i tried :sweat_smile:

Edit: added screenshot of what i mean

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ohhhh, I see what you mean.

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Thanks for all the help everyone, based on Square3Ds comment about how the design itself is forcing this undesirable result, I reworked the part, adding an inset of .5mm to the outer and inner edges to “cut off” the problem areas and have them print in the same yellow. This seems to have somwhat fixed the problem, where at least the lines are now no longer attempting to move to horizontal and stay diagonal

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It’s not much from my part, but i am glad that all of us, as a community, could help in anyway possible :heart:

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