Oriental Bathtub ★★

Taken all the way down to base materials, one Oriental Bathtub is 3 crafting steps deep and needs 4 intermediates — Treated Spruce Lumber ×4, Rosewood Lumber ×3, Firewood ×1 and 1 other — which resolve to 5 distinct raw materials totalling 90 units, plus 59 crystals.

That bill outweighs 13,445 of the 13,602 recipes tracked here and 1,498 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 2 of those crystals go into the final step; the other 57 are burned by the intermediates, so the real crystal cost is 33 Wind Crystal, 19 Wind Shard, 5 Wind Cluster and 2 other kinds.

Every step is Carpenter work, from a Lv 12 intermediate up to the Lv 50 finish, so one class covers the whole chain.

4 of the 5 raw materials come out of the ground, and one of them is time-gated: Spruce Log (9:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Rosewood Lumber has the widest use: 83 recipes call for it, spanning seven of the eight crafting classes.