Dim3nsioneer 558
Dual extrusion is very high up in the list at UM since Makerbot didn't show a dual extruder for their newest generation of printers.
As Nicolinux pointed out, dual extrusion on the UM Original is still experimental. But it works. There are very nice results to be found here in the forum. 'Experimental' means you have to tweak it a bit until the results are good; it's not working extremely well out of the box.
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Nicolinux 288
Hi,
Ultimaker has released a dual extrusion kit for the Ultimaker Original. It is still marked as experimental. For the Ultimaker 2 there is no dual extrusion kit, although everything is prepared (the head has a second hole to fit another nozzle). So I'd say if dual extrusion (for multi colour prints) is very high up your priorities list, Ultimaker might not be the best candidate right now.
But I think dual extrusion is messy and does not work really well anyway. One nozzle is trouble enough - like I always say
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