Millmaster's Saw ★★

Taken all the way down to base materials, one Millmaster's Saw is 3 crafting steps deep and needs 6 intermediates — Adamantite Ingot ×3, Adamantite Rivets ×2, Astral Birch Lumber ×1 and 3 others — which resolve to 12 distinct raw materials totalling 55 units, plus 55 crystals.

That bill outweighs 12,983 of the 13,602 recipes tracked here and 1,765 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 51 are burned by the intermediates, so the real crystal cost is 30 Fire Crystal, 10 Wind Crystal, 4 Earth Cluster and 5 other kinds.

The chain crosses three disciplines — Blacksmith to Lv 60, Alchemist to Lv 60 and Carpenter to Lv 60 — so no single class can finish it unaided.

7 of the 12 raw materials come out of the ground, and 6 of them are time-gated: Adamantite Ore (0:00, 2:00, 6:00, 10:00, 12:00, 14:00, 18:00, 22:00), Astral Moraine (0:00, 12:00) and 4 others. 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.