Encouraged by the first pass results on our recycled nylon filament made from used Cornish fishing nets, I’ve dyed some 3D printed test forms in exactly the same way. Same everything within an acceptable margin of error.

Middle ring is the control and is not dyed.

In strong white light the orange looks a little bit odd with the underlying green-blue body colour, but the blue is a very attractive deep royal blue with just a hint of green where the dye penetration is less complete. Not shown here but in strong Cornish sunlight the blue is especially pleasing.

If anything the colour intensity on both forms is better than the simple filament tests and there are obvious geometrical reasons why that might be.

A non-obvious effect of the dying process is that the forms have become more flexible when compared to the control. Nylon filaments have a reputation for absorbing water so we’ll have to see if that flexibility remains after they have dried more completely.

Just to re-iterate; These tests are all about colour not print quality, so photographic evidence is never going to be as representative as the naked eye and my opinions are subjective. Also the print quality isn’t the best, but that’s mainly because I’m using a super-cheap printer on a material that it isn’t rated for and operating the machine well outside its design specs.

But all in all I’m really happy to have confirmed the findings of the first pass and then gone on to demonstrate that there is real potential here to expand design horizons. I have a couple more dye tests to do but next week is Cornwall Chamber of Commerce Business Week, so maybe I’ll see you there 😉