Simple one-sided roller chain

Needed a simple, light, one-sided roller chain for a project that was easy to print on a basic extruder printer. This is what I came up with. So far it's been printing well in PLA and requires minimal cleanup, if any. It is NOT made to any chain size standards. One part per link and they just snap together. Each link adds 12.5 mm to the chain length (total link length is 18 mm).

Included the original Sketchup file as well. I initially designed it at about 1/2 size - it actually worked as a linkage (so maybe a bracelet?) but looked a bit iffy on working with a sprocket.

There's a demo/test project for it now that uses the chain to spin a sprocket (with a short video).
http://www.thingiverse.com/thing:1875428