Birch Spinning Wheel

Taken all the way down to base materials, one Birch Spinning Wheel is 3 crafting steps deep and needs 3 intermediates — Birch Lumber ×3, Adamantite Rivets ×2 and Adamantite Nugget ×2 — which resolve to 3 distinct raw materials totalling 27 units, plus 45 crystals.

That bill outweighs 9,763 of the 13,602 recipes tracked here and 1,005 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 35 are burned by the intermediates, so the real crystal cost is 20 Fire Crystal, 20 Wind Crystal and 5 Ice Crystal.

The chain crosses two disciplines — Carpenter to Lv 59 and Blacksmith to Lv 58 — so no single class can finish it unaided.

All 3 raw materials are gathered, and 2 of them are time-gated: Adamantite Ore (0:00, 2:00, 6:00, 10:00, 12:00, 14:00, 18:00, 22:00) and Darksteel Ore (1:00). The widest gap between consecutive opening times is 4 Eorzean hours, about 12 real-world minutes.

Of the intermediates, Adamantite Nugget has the widest use: 79 recipes call for it, spanning six of the eight crafting classes.