What do people want in a multi-nozzle-hotend?
I am definitely going to tackle this. Almost certainly a bowden only affair. Should sell on http://www.e3d-online.com for £100-150. Maybe even less.
I am thinking 3 nozzles:
0.25mm with a short melt zone used for creating super precise perimeters with pricier HQ nicely coloured filament (faberdashery). To give best accuracy and finish.
0.7mm with a fast long melt zone used for infil should make printing infill very fast, and also produce very stong objects. Use cheaper filament here too.
0.Xmm for support material. Best properties for a support material nozzle as yet unknown to me. Suggestions?
The above categories are supported in slic3r for use each with a separate extruder.
Also going from 3 nozzles to 4 nozzles induces problems with levelling and planarity of the nozzles. 3 is much simpler for us, and for the end user.
Hot side would be just like my current E3Dv4 nozzle, but with stated nozzle variations. Only 1 heatsink for all 3 nozzles though - watercooling a very real possibility here. Would probably ship with a whole array of nozzles too, so if you just wanted multicolour prints from RGB 0.4mm nozzles you could do that too.