Chains are so cool!
I love 3D printed chains that print already connected, but that wouldn't work so well on my single-colour printer. So, I designed this chain for easy assembly, while bearing in mind that the links needed to stay securely connected afterwards.
And I printed it in flame colours! Red, yellow, and orange:
The links are very easy to print - no overhangs, and such a small object. Even two dozen links only took a few minutes to complete. So, I printed a set in each colour, and put them in a pile.
One by one, I alternated the colours, and clipped them together. There's a little notch on the inside of the loops that doesn't have any impact when sliding the links together, but it stops them coming back out again. You'd need to bend the plastic laterally if you wanted to disconnect the chain!
It's all so smooth and fluid! Big holes in the links mean lots of room to move, and very little friction, so you can just run it between your fingers, and it'll slide right off them...
I designed in this in TinkerCAD, which is great for projects like this. So quick and simple!