Rarefied Ironwood Grinding Wheel

Taken all the way down to base materials, one Rarefied Ironwood Grinding Wheel is 3 crafting steps deep and needs 3 intermediates — Ironwood Lumber ×2, Blue Zircon ×1 and Annite Whetstone ×2 — which resolve to 3 distinct raw materials totalling 21 units, plus 56 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 815 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 16 of those crystals go into the final step; the other 40 are burned by the intermediates, so the real crystal cost is 48 Wind Crystal and 8 Ice Crystal.

The chain crosses two disciplines — Carpenter to Lv 87 and Goldsmith to Lv 86 — 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, Annite Whetstone has the widest use: 96 recipes call for it, spanning four of the eight crafting classes.