Adamantite Sledgehammer

Taken all the way down to base materials, one Adamantite Sledgehammer is 2 crafting steps deep and needs 3 intermediates — Adamantite Nugget ×2, Birch Lumber ×1 and Scale Glue ×1 — which resolve to 6 distinct raw materials totalling 24 units, plus 30 crystals.

That bill outweighs 8,926 of the 13,602 recipes tracked here and 1,021 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 20 are burned by the intermediates, so the real crystal cost is 15 Fire Crystal, 5 Earth Crystal, 5 Water Crystal and 1 other kind.

The chain crosses three disciplines — Blacksmith to Lv 59, Alchemist to Lv 59 and Carpenter to Lv 58 — so no single class can finish it unaided.

3 of the 6 raw materials come out of the ground, and 2 of them are time-gated: Adamantite Ore (0:00, 2:00, 6:00, 10:00, 12:00, 14:00, 18:00, 22:00) and Darksteel Ore (1:00). 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.