Bismuth Saw

Taken all the way down to base materials, one Bismuth Saw is 2 crafting steps deep and needs 2 intermediates — Bismuth Ingot ×3 and Red Pine Lumber ×1 — which resolve to 3 distinct raw materials totalling 23 units, plus 47 crystals.

That bill outweighs 8,647 of the 13,602 recipes tracked here and 956 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 15 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 32 Fire Crystal, 8 Wind Crystal and 7 Earth Crystal.

The chain crosses two disciplines — Blacksmith to Lv 85 and Carpenter to Lv 84 — so no single class can finish it unaided.

All 3 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Bismuth Ingot has the widest use: 104 recipes call for it, spanning six of the eight crafting classes.