Brass Hatchet

Taken all the way down to base materials, one Brass Hatchet is 3 crafting steps deep and needs 5 intermediates — Brass Ingot ×1, Clove Oil ×1, Initiate's Hatchet ×1 and 2 others — which resolve to 5 distinct raw materials totalling 11 units, plus 10 crystals.

That bill outweighs 5,999 of the 13,602 recipes tracked here and 661 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 6 are burned by the intermediates, so the real crystal cost is 4 Fire Shard, 3 Earth Shard, 2 Wind Shard and 1 other kind.

The chain crosses four disciplines — Blacksmith to Lv 24, Carpenter to Lv 16, Alchemist to Lv 14 and Goldsmith to Lv 14 — so no single class can finish it unaided.

All 5 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, Iron Ingot has the widest use: 113 recipes call for it, spanning seven of the eight crafting classes.