That is exactly what i wanted to know, How many crucibles you would need per centrifuge so it would keep up and constantly going
I did some basic calculations and with 16 centrifuges. 5 hours of constant centrifuging would give ya 34 stacks of copper, Which is Awesome!
EDIT: I just realised this:
Copper - Lava Centrifuging
Tin - Lava Centrifuging
Iron - Golem farm
Gold- Zombie pigmen soul shards
Redstone - Witch soul shards
Diamonds - Coal Chunks
Jeez, Who need quarries
But I will keep quarring to get Rubies/Sapphires/Green-Sapphires, Coal, Bauxite and so on.