Artisan's Spinning Wheel ★★★

Taken all the way down to base materials, one Artisan's Spinning Wheel is 3 crafting steps deep and needs 5 intermediates — Ancient Lumber ×1, Cobalt Rivets ×1, Treated Spruce Lumber ×1 and 2 others — which resolve to 7 distinct raw materials totalling 26 units, plus 23 crystals.

That bill outweighs 9,543 of the 13,602 recipes tracked here and 976 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 20 are burned by the intermediates, so the real crystal cost is 10 Fire Shard, 6 Wind Crystal, 5 Wind Cluster and 1 other kind.

The chain crosses two disciplines — Carpenter to Lv 50 and Blacksmith to Lv 43 — so no single class can finish it unaided.

4 of the 7 raw materials come out of the ground, and 2 of them are time-gated: Scarlet Sap (3:00) and Spruce Log (9:00). The widest gap between consecutive opening times is 18 Eorzean hours, about 53 real-world minutes.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.