Weighted Adamantite Sledgehammer ★★

Taken all the way down to base materials, one Weighted Adamantite Sledgehammer is 3 crafting steps deep and needs 6 intermediates — Adamantite Ingot ×2, Astral Birch Lumber ×1, Scale Glue ×1 and 3 others — which resolve to 15 distinct raw materials totalling 51 units, plus 40 crystals.

That bill outweighs 12,830 of the 13,602 recipes tracked here and 1,731 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 36 are burned by the intermediates, so the real crystal cost is 10 Fire Crystal, 10 Wind Crystal, 5 Water Crystal and 6 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 15 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.