Carbuncle Bed

Taken all the way down to base materials, one Carbuncle Bed is 4 crafting steps deep and needs 10 intermediates — Star Ruby ×4, Hallowed Chestnut Lumber ×2, Hallowed Ramie Cloth ×2 and 7 others — which resolve to 9 distinct raw materials totalling 63 units, plus 104 crystals.

That bill outweighs 13,204 of the 13,602 recipes tracked here and 1,933 of the 1,968 Weaver ones, and 1 recipe nests deeper.

Only 9 of those crystals go into the final step; the other 95 are burned by the intermediates, so the real crystal cost is 38 Wind Crystal, 24 Lightning Crystal, 20 Water Crystal and 2 other kinds.

The chain crosses four disciplines — Weaver to Lv 56, Alchemist to Lv 56, Carpenter to Lv 56 and Goldsmith to Lv 55 — so no single class can finish it unaided.

All 9 raw materials are gathered, and one of them is time-gated: Abalathian Mistletoe (6:00, 18:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Rainbow Thread has the widest use: 116 recipes call for it, spanning five of the eight crafting classes.