Eikon Iron Lapidary Hammer ★★★

Taken all the way down to base materials, one Eikon Iron Lapidary Hammer is 2 crafting steps deep and needs 5 intermediates — Luminous Fiber ×3, Gold Ingot ×2, High Mythrite Ingot ×2 and 2 others — which resolve to 17 distinct raw materials totalling 40 units, plus 35 crystals.

That bill outweighs 11,825 of the 13,602 recipes tracked here and 1,447 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 13 Fire Cluster, 10 Wind Cluster, 6 Earth Cluster and 3 other kinds.

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

9 of the 17 raw materials come out of the ground, and 7 of them are time-gated: Crystallized Sap (8:00, 20:00), Lumythrite Ore (2:00, 14:00) and 5 others. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Gold Ingot has the widest use: 184 recipes call for it, spanning seven of the eight crafting classes.