Aesthete's Grinding Wheel ★★★

Taken all the way down to base materials, one Aesthete's Grinding Wheel is 2 crafting steps deep and needs 3 intermediates — Merbau Lumber ×5, Brashgold Plate ×3 and Cobalt Alloy Ingot ×2 — which resolve to 8 distinct raw materials totalling 60 units, plus 44 crystals.

That bill outweighs 13,112 of the 13,602 recipes tracked here and 1,419 of the 1,552 Carpenter ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 40 are burned by the intermediates, so the real crystal cost is 18 Ice Cluster, 12 Wind Cluster, 10 Earth Cluster and 1 other kind.

The chain crosses three disciplines — Carpenter to Lv 80, Armorer to Lv 80 and Blacksmith to Lv 80 — so no single class can finish it unaided.

3 of the 8 raw materials come out of the ground, and 3 of them are time-gated: Brashgold Ore (2:00, 14:00), Fireheart Cobalt (2:00, 14:00) and 1 other. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Cobalt Alloy Ingot has the widest use: 55 recipes call for it, spanning five of the eight crafting classes.