1) For a mixing extruder, a gradient could be easily generated using <%> - something like
Code: Select all
M165 A<(100 - %) / 100> B<% / 100>
2) The mixing extruder is limited to 4 extruders only. To use the full potential of the mixing extruder, something like a "virtual extruder" could be useful - where different materials could be assigned to different meshes like a classic extruder (mixing ratio would be then set in the material gcode).
3) For primming extruder with different colors would be nice to print into printed object (as infill, or something else...)