Purified Gold; there has to be a better way

[Arnulf]

So, I am quite vexed with this. I've come up with a solution and it looks like this:

https://i.imgur.com/0M0SP46.gifv

But the corresponding tapes look atrocious. There has to be more elegant way to solve this.
Also, when you watch the copper arm (#8) you'll notice a pause. I can't explain this. There should be no pause! I meticulously arranged all movements to be synced!

Unfortunately there is no easy way to show the tapes. The complete thing does not fit on the screen.

[Starficz]

your not using your inputs fully, it can be twice as fast, and because of that your tapes would be reduced in length by 50%

[PenumbralNova]

I think the problem with that solution is the handling of iron. You can produce 2 every 8 cycles but the arm takes 10 cycles to move them.