Ironwood Spinning Wheel

Taken all the way down to base materials, one Ironwood Spinning Wheel is 2 crafting steps deep and needs 2 intermediates — Ironwood Lumber ×3 and Manganese Ingot ×1 — which resolve to 3 distinct raw materials totalling 21 units, plus 48 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 815 of the 1,552 Carpenter ones, and 4,464 recipes nest deeper.

Only 16 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 32 Wind Crystal, 8 Fire Crystal and 8 Ice Crystal.

The chain crosses two disciplines — Carpenter to Lv 87 and Blacksmith to Lv 86 — so no single class can finish it unaided.

All 3 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, Manganese Ingot has the widest use: 134 recipes call for it, spanning seven of the eight crafting classes.