Hingan Oven

Taken all the way down to base materials, one Hingan Oven is 3 crafting steps deep and needs 5 intermediates — Electrum Ingot ×5, Tama-hagane Ingot ×5, Titanium Ingot ×5 and 2 others — which resolve to 8 distinct raw materials totalling 126 units, plus 124 crystals.

That bill outweighs 13,516 of the 13,602 recipes tracked here and 1,427 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 9 of those crystals go into the final step; the other 115 are burned by the intermediates, so the real crystal cost is 90 Fire Crystal, 25 Wind Shard, 5 Ice Crystal and 1 other kind.

The chain crosses three disciplines — Armorer to Lv 66, Blacksmith to Lv 66 and Goldsmith to Lv 42 — so no single class can finish it unaided.

All 8 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, Electrum Ingot has the widest use: 234 recipes call for it, spanning seven of the eight crafting classes.