Simple thin chain brush. The faster the stroke, the thinner the chain, making it appear as though it is twisting.
Doesn't work too well with sharp angles, but its great for chains mid-air and around someone's neck.
It's affected by velocity. You can get a thinner chain with a faster stroke, meaning you can have it appear as though its twisting.
(latest update adds a jump ring between each chain link and velocity)


Old version