Hingan Fence (Kura-zukuri)

Taken all the way down to base materials, one Hingan Fence (Kura-zukuri) is 2 crafting steps deep and needs 2 intermediates — Cut Stone ×20 and Oroshigane Ingot ×20 — which resolve to 4 distinct raw materials totalling 190 units, plus 168 crystals.

That bill outweighs 13,556 of the 13,602 recipes tracked here and 1,431 of the 1,441 Armorer ones, and 4,464 recipes nest deeper.

Only 28 of those crystals go into the final step; the other 140 are burned by the intermediates, so the real crystal cost is 80 Fire Crystal, 60 Wind Shard, 16 Ice Crystal and 1 other kind.

The chain crosses three disciplines — Armorer to Lv 63, Blacksmith to Lv 64 and Goldsmith to Lv 30 — so no single class can finish it unaided.

One intermediate outranks the result: Oroshigane Ingot is a Lv 64 Blacksmith recipe feeding a Lv 63 craft, so that step, not the last one, is the real gate.

All 4 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.