Well Pump

Taken all the way down to base materials, one Well Pump is 3 crafting steps deep and needs 5 intermediates — Firebricks ×4, High Steel Nugget ×4, Chloroschist Whetstone ×3 and 2 others — which resolve to 8 distinct raw materials totalling 55 units, plus 108 crystals.

That bill outweighs 12,983 of the 13,602 recipes tracked here and 1,545 of the 1,591 Alchemist ones, and 337 recipes nest deeper.

Only 64 of those crystals go into the final step; the other 44 are burned by the intermediates, so the real crystal cost is 32 Lightning Crystal, 32 Water Crystal, 24 Wind Crystal and 2 other kinds.

The chain crosses three disciplines — Alchemist to Lv 90, Goldsmith to Lv 81 and Blacksmith to Lv 61 — so no single class can finish it unaided.

All 8 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, Mortar has the widest use: 140 recipes call for it, spanning six of the eight crafting classes.