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This open-source multi-color 3D printing add-on can be built for less than $20 - 3D Printing Industry
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The Ultimate Guide to 3D Printing in Color -Pinshape 3D Printing Blog | Tutorials, Contests & Downloads
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10 Best Multicolor 3D Prints | 3D Printing Blog | i.materialise | 3d printing toys, Prints, 3d printing
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Reprap 3D Printer Diamond Hotend Multi Color Hot End 3 IN 1 OUT Extruder HotEnd full kit/set for 0.4mm 1.75mm filament|multi color hot end|reprap 3ddiamond hotend - AliExpress
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