What’s the current state of multi-filament printing?

[Mentaluproar]

I was looking at building a Smuff v4.75 but it looks like it’s going to be very expensive compared to something like the Prusa MMU2S. What filament switching rigs do people here are tend to use?

[T3P3Tony]

The 3dchameleon (https://www.3dchameleon.com/) by Bill Steele looks interesting. its a development of the classic train track multifilament switching idea first proposed by Adrian years ago.

Then you have the multi in toothpaste out hotends (like the diamond). @deckingman here is an expert on those (see https://somei3deas.wordpress.com/)

Finally the most flexible solution is probably a toolchanger like e3d's or the Jubilee

[oliof]

On the 3Dprinters Discord, someone has tuned stacked Y splitters well enough that he can do 6 colors (white, 5 colors) in XY and 11 colors in Z(white, 5 colors, and 5 pastel colors by printing a white layer under a thin layer of the five colors).

As much as I like tool changers, you can get a lot of mileage out of the Y splitter approach if you build it well enough.