What actually changes when I select different extruders for different processes (raft, infill, etc.)?
I have three different extruders defined, all referencing tool 0 and using the same nozzle size. But each extruder definition has a slightly different extrusion multiplier and slightly different manually defined extrusion width. I couldn't see a difference with actual prints, so I've been experimenting by exaggerating the extrusion width, slicing, and looking at the preview. The only place that selecting a different extruder seems to do anything is for the interior infill.
The raft seems to use the primary extruder's nozzle size and ignore the extrusion width no matter what extruder I select.
Interior infill will use the selected infill extruder's extrusion width. But for shells (sides, external infill (top and bottom)) it seems to always just use the primary extruder's extrusion width.
Am I missing something or is this just straight broken?