Birch Signum

Taken all the way down to base materials, one Birch Signum is 3 crafting steps deep and needs 5 intermediates — Ramie Thread ×2, Birch Lumber ×1, Chimerical Felt ×1 and 2 others — which resolve to 11 distinct raw materials totalling 26 units, plus 29 crystals.

That bill outweighs 9,543 of the 13,602 recipes tracked here and 976 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 19 are burned by the intermediates, so the real crystal cost is 10 Wind Crystal, 7 Lightning Crystal, 5 Ice Crystal and 2 other kinds.

The chain crosses three disciplines — Carpenter to Lv 58, Alchemist to Lv 58 and Weaver to Lv 58 — so no single class can finish it unaided.

8 of the 11 raw materials come out of the ground, and one of them is time-gated: Red Quartz (10:00, 22:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Chimerical Felt has the widest use: 113 recipes call for it, spanning six of the eight crafting classes.