tl;dr - Anyone know how to use MPP?
Long-ass boring question
So we are up to Version 0.9.9 (yay!) with better heuristics and improvements all way around. However, one of the things I have wanted to experiment with is using walls/perimeters, plural, to effect better CMY functions. Since version 0.9.4, Multi-Perimeter Patterns is supposed to do this.
The Concept: It goes back to why people use CMYK instead of RGB. CMYK works a subtractive color model that uses transparent, pigment-based inks to absorb (subtract) specific wavelengths of light reflecting off a white surface. CMYK uses the white paper as the base color and then uses the layering of the four colors to create a vivid spectrum of colors. Unfortunately, 3D printing doesn't have a white background and FullSpectrum works in that the layers of different colors are there to fool the eye.
So what if we took our objects/models and used an inner wall/perimeter* as a solid white background to the FullSpectrum outer wall/perimeter*? The outer most wall is the FullSpectrum paint job. However, the next inner wall is just the white filament. A third or more wall is just the same white filament. However, when we paint, we just see the outer most layer. I thought "Walls" in the Multi-material --> Filament for Features section would cover this but my tests don't bear that out. And inner walls are generated at slicing time. We don't "see" inner walls until Preview.
Supposedly I can do that now with MPP but I don't see how. It could be that we I am overloaded with so many controls in Orcaslicer that I have missed it.
Anyone know how to use MPP? Thanks.
[*NOTE: I'd really love a unified lexicon to describe slicer parameters - walls or perimeters - pick one . Thanks.]
[NOTE 2: Should Fullspectrum be its own sub? Now that Bambu decided to copy it into their own slicer, I really think FullSpectrum is a viable standalone topic, just like Klipper. And btw, did BBL acknowledge this work? I hate when people steal from the Open Source Garden and dump it into their walled garden.]