Ironworks Boots of Crafting ★★★

Taken all the way down to base materials, one Ironworks Boots of Crafting is 3 crafting steps deep and needs 5 intermediates — Eikon Leather ×2, Luminous Fiber ×2, Rubber ×2 and 2 others — which resolve to 13 distinct raw materials totalling 32 units, plus 34 crystals.

That bill outweighs 10,750 of the 13,602 recipes tracked here and 1,613 of the 1,844 Leatherworker ones, and 337 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 29 are burned by the intermediates, so the real crystal cost is 11 Earth Cluster, 6 Lightning Cluster, 6 Water Cluster and 3 other kinds.

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

7 of the 13 raw materials come out of the ground, and 4 of them are time-gated: Crystallized Sap (8:00, 20:00), Lumythrite Ore (2:00, 14:00) and 2 others. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Rubber has the widest use: 191 recipes call for it, spanning four of the eight crafting classes.