I think it's time for me to start planning the upgrade to multiple extruders.

3D Printing
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1

I think it’s time for me to start planning the upgrade to multiple extruders.
http://www.3dppvd.org/wp/2013/02/soluble-support-material/

2

Saw that one and thought the same thing. ordered some HIPS last night.

3

What slicing software best supports “true” multi-material printing?

I imagine you would need to allow for multiple filament diameters, multiple E steps/mm (firmware, I know), multiple retractions, and multiple hot-end temperatures to really support any configuration of several materials. Does any of the software easily allow all of that?

4

Good question, seems like all of them are kind of a hack for this right now.

5

Slic3r does second-extruder support printing with one click, and you can also do two-color printing from two STLs by first converting them to a single multi-material AMF (Slic3r can also do this conversion, though the interface for it isn’t great).

6

Nice, picking away support material can be laborious