Black liquid dye. Pre-dissolved liquid dye is also great as a stain for unfinished wood and wicker. Works on silk and dried floral, nylon and plastic and even golf balls. Dye for clothing ...
Manufacturers dye all sorts of 3D printer filaments on their factory lines; why can’t we? [Richard] takes this idea one step further by creating his own custom multicolored reels of nylon.
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