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Delta 3D Printer
Delta 3D Printer, Single hotends, Multiple hotends, Multi-colour hotends(printing heads), plastic filament and 3D prints .
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How to make your own all metal multi color water cooled hotend
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Same method as described here
Stainless tubes converge halfway down in the heater block.
I sliced the tube with slic3r and the manually added the colour changes in wordpad
Colour change on a layer change without any retraction The first two prints were printed with a .75 mm nozzle and then I changed to .5 mm for the tube below (g-code file here) 
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