Hammermaster's Visor ★★

Taken all the way down to base materials, one Hammermaster's Visor is 3 crafting steps deep and needs 4 intermediates — Adamantite Ingot ×2, Adamantite Rivets ×2, Griffin Leather ×1 and 1 other — which resolve to 11 distinct raw materials totalling 45 units, plus 42 crystals.

That bill outweighs 12,451 of the 13,602 recipes tracked here and 1,312 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 38 are burned by the intermediates, so the real crystal cost is 30 Fire Crystal, 6 Earth Cluster, 2 Fire Cluster and 2 other kinds.

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

6 of the 11 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), Blue Quartz (6:00, 18:00) 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.