When I first printed the links out and put them together, the assembled chain had a twist in it and it was very stiff. After putting it on my printer, the test print was very noisy with lots of creaks coming from the chain. After digging through some of the comments I found Safecrackr's comment about drilling out the holes. I drilled out the holes with a 9/64 drill bit. Then I used the tip of the provided flush cutters to deburr/bevel the edges of the holes by spinning the tip of the cutters in the hole. What a difference! My cable is now moving freely!