Hammermaster's Waist Apron ★★

Taken all the way down to base materials, one Hammermaster's Waist Apron is 3 crafting steps deep and needs 6 intermediates — Griffin Leather ×3, Astral Silk ×1, Hardsilver Ingot ×1 and 3 others — which resolve to 16 distinct raw materials totalling 48 units, plus 34 crystals.

That bill outweighs 12,691 of the 13,602 recipes tracked here and 1,815 of the 1,844 Leatherworker ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 10 Lightning Crystal, 9 Wind Crystal, 6 Wind Cluster and 3 other kinds.

The chain crosses four disciplines — Leatherworker to Lv 60, Alchemist to Lv 60, Weaver to Lv 60 and Goldsmith to Lv 56 — so no single class can finish it unaided.

9 of the 16 raw materials come out of the ground, and 5 of them are time-gated: Astral Moraine (0:00, 12:00), Red Alumen (10:00, 22:00) and 3 others. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Crawler Silk has the widest use: 178 recipes call for it, spanning five of the eight crafting classes.