If my assumptions are correct, meownimum rate is likely 10 due to the Glyph of Rejection timings along with conduits being a bitch but I just barely couldn't make 10 work on the output side :(

The main things holding this solution back from 10r are the quicksilver atoms not being able to moved off the Glyph of Rejection fast enough (wasting one cycle), and arm 3 colliding with the leftover metal on its way back to the conduit. It seems like the arm 3 collision is easier to fix with different layouts, but none of these layouts allowed for the quicksilvers to be moved as fast as possible.

Theoretically you could use 2 Glyphs of Rejection on the output side to make it 9 rate but that leaves so little area for arms, bonders and atoms that it seems impossible.

Meow!