This is a finely detailed print... Replicator 2 users shouldn't rescale it at all or it may not link together as it should. However, on a 5th Generation Replicator, for example, you will probably need to scale it down by 3-5% to get it connecting as securely as a Replicator 2 print. This is just due to the different levels of accuracy and detail delivered by different 3D printers. This was developed for a Replicator 2 but will print well on other machines with a bit of testing.
The .stl file has 4 links in it. Multiply on your build plate to suit or make a few in one colour/one print then change colours to make more to link together.
On a Replicator 2 these clip on snuggly so they are secure and rotate freely (up to the maximum degrees allowable). However, I suggest using my Build Plate Stabilizers to ensure there is no rocking of the build pate that can affect print quality.
Suggest printing with 3 shells and 35% infill which will make them almost solid.