This is a simple big-endian binary-seximal adder, with one small twist. The largest binary digit is encoded as 18 instead of 16. This means we can restrict ourselves to needing a maximum of one carry operation instead of the two carries that you might get with a standard binary encoding. I couldn't find a zero carry encoding; there is some wiggle room but not much between the two bases.

I use the triplex bonds to find on-bits and then the corresponding 1s and 6s are sent over to the adder. The carry operation is done and then the final quicksilver sticks are bonded to create the output. The slowest operation seems to be trashing the intermediaries, so seems like there's lots of room for improvement.

The metric heavily underweight gold? Which I guess implies we want big machines. Currently I'm at ~200G/5, 1400C 200A => So seems like I should be improving my cycle count a lot.