Rarefied Doman Iron Uchigatana

Taken all the way down to base materials, one Rarefied Doman Iron Uchigatana is 3 crafting steps deep and needs 5 intermediates — Oroshigane Ingot ×2, Kudzu Cloth ×1, Larch Lumber ×1 and 2 others — which resolve to 5 distinct raw materials totalling 22 units, plus 25 crystals.

That bill outweighs 8,402 of the 13,602 recipes tracked here and 917 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 9 of those crystals go into the final step; the other 16 are burned by the intermediates, so the real crystal cost is 13 Fire Crystal, 5 Lightning Crystal, 4 Earth Crystal and 1 other kind.

The chain crosses three disciplines — Blacksmith to Lv 66, Weaver to Lv 64 and Carpenter to Lv 62 — so no single class can finish it unaided.

All 5 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, Oroshigane Ingot has the widest use: 114 recipes call for it, spanning six of the eight crafting classes.