<p><a rel="nofollow" target="_blank" href="https://youtu.be/MNZOPV5nO94">https://youtu.be/MNZOPV5nO94</a></p><p>The magnetic change idea is from "foehnsturm" I redesigned it for the Ultimaker2. My goal was to stay close to the UM2 design, you can of course change this and add f.e. a full metal head as 2th head.</p><p>The main advantage of this setup is that you can easy put the 2th head aside and reclaim most of the buildarea for single head extrusion.<br></p><p>Another + is the use of different nozzle temperatures in the different heads.<br></p><p>The main issue is the leaking of filament from the 2th extruder. Using retraction and a prime tower does help a lot. At least in this setup the leaking does not take place on the printed part.<br></p><p>you'll need left and right parts, just mirror the items in your slicer.</p><p>find a project summary including instructions here;<br></p><p><u><a rel="nofollow" target="_blank" href="http://ultimaker.com/en/modifications-and-hacks/view/10657-multi-extruder?page=27#reply-107302">http://ultimaker.com/en/modifications-and-hacks/view/10657-multi-extruder?page=27#reply-107302</a></u><br></p><p>update 25/5/2015: Added the "pick up" unit that I forgot in the first upload, also corrected this in the step file.</p><p>update: added new version of the docking corners that clamp to the housing, so no need for tape anymore. (all the parts with the name starting with "non-tape")</p>
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