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Pyratite 6

Requires:
4.5/s coal
9/s each of lead & sand

Produces:
4.5/s pyratite

Input to the middle 2 mixers, placement of material type doesn't matter. Output is at the top right bridge. I really didn't want to use unloaders, but all the 6 mixer designs I've seen not using unloaders end up backing up if there are too many items in the input stream. Unloader designs like this one make it significantly more reliable at a baseline. As far as I'm aware, this is the cheapest and most practical version of this schematic out there, but I'm happy to be proven wrong. Comment with a link if you think you've found one that's marginally better.

Made by Hikari

Schematic code:
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