Astral Grinding Wheel

Taken all the way down to base materials, one Astral Grinding Wheel is 3 crafting steps deep and needs 4 intermediates — Holy Cedar Lumber ×2, Mythrite Nugget ×1, Holy Water ×4 and 1 other — which resolve to 6 distinct raw materials totalling 26 units, plus 28 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 7 of those crystals go into the final step; the other 21 are burned by the intermediates, so the real crystal cost is 16 Wind Crystal, 6 Water Crystal, 3 Fire Crystal and 1 other kind.

The chain crosses three disciplines — Carpenter to Lv 53, Alchemist to Lv 52 and Blacksmith to Lv 51 — so no single class can finish it unaided.

All 6 raw materials are gathered, and 2 of them are time-gated: Dravanian Mistletoe (0:00, 12:00) and Astral Rock (21:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Mythrite Nugget has the widest use: 102 recipes call for it, spanning seven of the eight crafting classes.