Is there any existing technology that takes a variety of filaments of different colors (say a CMYK blend), and then blends them in different ratios to achieve whatever color you want?

I had this thought the either day, and I figure it's either stupid, already exists, or genius.

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[–] 2 points 2 months ago

Binder jet printing is an older 3D printing technology in which adhesive is sprayed on layers of powder to build an object. A mix of ink can be included in the spray to produce detailed color combinations.

https://en.wikipedia.org/wiki/Powder_bed_and_inkjet_head_3D_printing

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