Hey! This thing is still a Work in Progress.
Files, instructions, and other stuff might change!
FDM Multicolor Extruder Tip
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Published on January 20, 2013
Description
This is a from scratch - construction of a 3 Color CMY Mixing Head, with additional feed for a solveable medium (bridging,...)
Instructions
Hi
First of all, i added the Iges File for everyone who wants to modify it directly in a Construction solution like SE, SW, Catia
The Distributor and the mixer have to be done one a SLM Printer from stainless steel which is doable with that kind of machine. Costs should not exceed 50€ for that kind of printing service
maybe there is a way to simplify the mixing situation to do without 3d printing,
the rest is able to do with a standard workshop machinery (threadings)
soldering the mixer and the distributor together with some 500 Degree soldering material, nothing special needed here, just a flame and the right solder
threadings are not exported by my crafting solution, M4 in and out to fit the "spitze"
Heating should be mounted all the way down from the fillament-crossing together down the mixer to the tip
Todo:
Fluid mixing Simulation
CMY Mixer Software for Repraps
Cooling Rips at not heat-needing Segments
Isulation of heat to the extrusion section
First of all, i added the Iges File for everyone who wants to modify it directly in a Construction solution like SE, SW, Catia
The Distributor and the mixer have to be done one a SLM Printer from stainless steel which is doable with that kind of machine. Costs should not exceed 50€ for that kind of printing service
maybe there is a way to simplify the mixing situation to do without 3d printing,
the rest is able to do with a standard workshop machinery (threadings)
soldering the mixer and the distributor together with some 500 Degree soldering material, nothing special needed here, just a flame and the right solder
threadings are not exported by my crafting solution, M4 in and out to fit the "spitze"
Heating should be mounted all the way down from the fillament-crossing together down the mixer to the tip
Todo:
Fluid mixing Simulation
CMY Mixer Software for Repraps
Cooling Rips at not heat-needing Segments
Isulation of heat to the extrusion section
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License
FDM Multicolor Extruder Tip by djmad is licensed under the Attribution - Non-Commercial - Creative Commons license.
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If you've read Richraps experiments with tri extrusion, you'll know that this won't give you any choosable color of the rainbow. What we experience with filament is known as laminar flow, and basically what you'll get is tri-sided colored filament. It makes for an AMAZING effect though, so totally worth doing: http://richrap.blogspot.co.uk/...
sure like the toothbrush paste
to conquer this i designed the mixer, which should mix that stuff up.
i will print multiple of this mixers, to look, which one works best.
nice would be a extrusion, which can add "puls-width modulation" with colors. lets say 2 colors 40% magenta, 60% cyan
so steppers would make 4 steps magenta 6 steps cyan, ...... with the mixer it should be allow a steady constant color
greets