Creality is so close to having a great Multicolor accessory lineup, but it all comes up just short. I would love a multicolor print while drying solution that integrated with various printers. Like really integrated, not just connected to.
Current Options
CFS - Integrates with certain printers, but no active drying, just desiccant packs. And doesn’t integrate with all printers
Space Pi - Active drying, not multicolor, not integrated.
SpacePi X4 - getting close!! Multicolor, Drying while printing, but really designed to feed several different printers from one location. Not a wide use case.
Other companies
Anycubic has the ACE Pro2 which does do multicolor drying while printing, integrates with many of their printers including the flagship line (S1) and budget line (Kobra 3) as well as large printbed (Kobra 3 Max).
Prusa has . . . . nothing. Just a giant, multi-toolhead printer with spools hanging out in the open.
The interface on the ACE is a USB/Serial connection. Looks like a serial port on the printer controller side, but it’s USB protocol over the wires. Great idea!! Very flexible, Maybe we can integrate that with a Creality printer?
Rant versus Think Tank
Note: I do not have an answer here. I am tossing an idea out there for people to muse over. I am simply stating that in the 3D printing world, there is a use case for this. We have hit speed, we have hit printbed size, we have enclosed and non-enclosed options, We have multi-color using one toolhead, we have multi-color using multiple toolheads. I think the next innovative jump will be the company that produces an add-on to make these multi-color printers easier to use and more reliable (dry filament).