Cobalt Doming Hammer

Taken all the way down to base materials, one Cobalt Doming Hammer is 3 crafting steps deep and needs 3 intermediates — Cobalt Ingot ×2, Cobalt Rivets ×1 and Oak Lumber ×1 — which resolve to 3 distinct raw materials totalling 9 units, plus 28 crystals.

That bill outweighs 5,492 of the 13,602 recipes tracked here and 597 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 18 are burned by the intermediates, so the real crystal cost is 20 Fire Shard, 5 Earth Shard and 3 Wind Shard.

The chain crosses two disciplines — Blacksmith to Lv 43 and Carpenter to Lv 32 — so no single class can finish it unaided.

All 3 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.