Summary

Dyes the Natural PLA to the colour you put on the sponge

Instructions

1) Print all the parts
2) Place it around the 3mm Filament before the extruder (2 Parts)
3) Cut a bit of sponge (I used kitchen sponge)
4) Put some drops of Ink from a inkjet printer on the sponge (Messy...use gloves)
5) Place the inner top over the top.
6) Place the outer top with the clips on top of it
(I was thinking that the two tops should stop the sponge from drying out too much.)

I think it will work well with kitchen dye too.

Next I am thinking about what if I had a colour inkjet head that sprayed the colour on the filiment before the extruder.

Ink Injector for 3mm Filament