1cm per link, snap-link chain designed in sketchup. v6 is the best version so far, if you snap the links together, it's near impossible to seperate them, yet they move freely. Item that I devived this from didn't work well, too much slack, and bad fastening. So I started from Scratch using the shape.1) Duplicate the latest STL as many times as you need in your slicer. 2) Print [mine: PLA, 40% infill, 0.35 nozzle, 0.21 layer height] 3) Snap together the links, if they can't, warm them up alittle first.