How does a dual-colour silk filament produce two tones in one print?
The two coloured melts are brought together inside the die and leave it as one strand with the colours running side by side, so a single-nozzle printer lays both tones in the same layer. As the nozzle moves, and as the part is viewed from different angles, one tone catches the light more than the other, which is what gives the shifting silk effect. Because the colour sits inside the strand rather than on the surface, the finish survives handling. The material itself stays PLA: a visual grade with normal PLA strength, not intended for high heat or sustained load.
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