Doman Iron Gunblade

Taken all the way down to base materials, one Doman Iron Gunblade is 2 crafting steps deep and needs 3 intermediates — Oroshigane Ingot ×2, Durium Nugget ×1 and Persimmon Lumber ×1 — which resolve to 5 distinct raw materials totalling 19 units, plus 24 crystals.

That bill outweighs 7,589 of the 13,602 recipes tracked here and 804 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 7 of those crystals go into the final step; the other 17 are burned by the intermediates, so the real crystal cost is 12 Fire Crystal, 9 Wind Crystal and 3 Earth Crystal.

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

One intermediate outranks the result: Persimmon Lumber is a Lv 66 Carpenter recipe feeding a Lv 64 craft, so that step, not the last one, is the real gate.

All 5 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.