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Interface Layer Settings, Top Side of Part

KISSlicer offers an interface layer with a specific filament selected, intending for minimizing use of generally more expensive soluble support. This is a great feature, but the interface layers only print on top of the supports, under the model. Currently the gap rule is applied and supports are generated in air, or directly on the part.

Is there a way to build supports above a model with interface material between the model and supports?

Maybe a feature request more than a question.

Edit:

Soluble supports under part! Great feature, love it!

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Regular supports printed on top of model, no interface layer. Yuck!

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There are certainly other smart support implementations like tree supports that could fix this issue too, if we had the ability to send commands to the pallet and slice with other tools.

Edit 2:

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It looks like KISSlicer will put dense interface layers on top of the part, but it is easily overridden and seems to ignore the interface layer thickness setting entirely.

Edit 3:

Specified screenshots above are with KISSlicer

Updated project link: https://share.canvas3d.io/projects/4ca07...

Answered! View the answer I have this problem too

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Hi @thatguy, can you try changing the slicing engine to Slic3r for this project? With the interface layers selected as a different drive from the main supports, this engine will do a better job of outputting the interface layers on the top of the model.

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Unfortunately it seems Slic3r ignores horizontal gap from parts, so the 'normal' support material will weld itself against the body of the part, and support density seems to be ignored, only works with auto support density. But these are different issues, and you're correct slic3r does a better job applying dense supports to the top side of parts. None the less, supports are less than useful in their current state.

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@thatguy Hm, I am seeing that it is hard to preview the gap from part setting. Horizontal is a bit easier to see as it creates a wider spread from the part, but changes to the vertical gap are harder to see. I have found that for regular supports, the low-med densities are the easiest to remove. Changing the interface support density does seem to take effect in the preview, I'll share the photos on this same thread.

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Hey Ben! Canvas already has support interfaces! It is available through KiSSlicer/Slic3r.

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Hana, I have not seen interfaces in the locations I'm referring to. I'll update the question to be perhaps more clear where I am describing interface layers.

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@hana or any staff, would you mind answering the clarified question?

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Using the Slic3r engine, here is interface density 100%:

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Interface density at 50%:

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Please feel free to share screenshots again of the behavior you are seeing. With this new engine recently released we’re looking to report any bugs we can to the team. Thank you very much for your cooperation @thatguy

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Adding screenshots @aordono

Horizontal gap from part set to a whopping 3mm, standard support material is still directly against object body and will definitely weld to the part:

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Interface Density set to Auto:

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Interface Density set to 100%:

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Interface Density set to 50%:

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So I concur with your assessment on interface density, it looks like the % value entered is divided by two or something, and only Auto gets it ‘right’.

Minor complaint, but this took an absurd amount of time to compile these screenshots due to the slicing time. I’m definitely looking to move to P2PP until Canvas can resolve slicing bugs, rendering bugs, and export faster to make it practical to iterate settings like this.

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Ben M will be eternally grateful.
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