It's insane how much time I spent approaching this puzzle in the wrong way. My initial question was whether it was more space efficient to store 24 quicksilver or to get 12 quicksilver from a "grab plus rotate" arm holding a 3 gold wand. 

Once I remembered that we have more than just DRM, I made this in a few hours. This layout works with a 19 length trackloop. Tragically, 19 is a prime number, which means I needed to make it length 20 to get my final quicksilver attachment working. 

This solution is ok, but there's a lot of solution space I didn't get to explore. I think that we'll see some interesting solves with 2 arms (at least) in the main loop, and potentially see wanding tech to steal a product away from a hexarm :)