Ironworks Vest of Gathering ★★★

Taken all the way down to base materials, one Ironworks Vest of Gathering is 3 crafting steps deep and needs 5 intermediates — Luminous Fiber ×3, Eikon Leather ×2, Eikon Cloth ×1 and 2 others — which resolve to 14 distinct raw materials totalling 39 units, plus 37 crystals.

That bill outweighs 11,756 of the 13,602 recipes tracked here and 1,756 of the 1,844 Leatherworker ones, and 337 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 11 Earth Cluster, 9 Lightning Cluster, 8 Wind Cluster and 2 other kinds.

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

8 of the 14 raw materials come out of the ground, and 5 of them are time-gated: Crystallized Sap (8:00, 20:00), Frost Cotton Boll (6:00, 18:00) and 3 others. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, High Mythrite Ingot has the widest use: 150 recipes call for it, spanning seven of the eight crafting classes.