Ragstone Grinding Wheel

Taken all the way down to base materials, one Ragstone Grinding Wheel is 2 crafting steps deep and needs 2 intermediates — Ash Lumber ×1 and Bronze Ingot ×1 — which resolve to 4 distinct raw materials totalling 7 units, plus 4 crystals.

That bill outweighs 4,963 of the 13,602 recipes tracked here and 509 of the 1,552 Carpenter ones, and 4,464 recipes nest deeper.

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

The chain crosses two disciplines — Carpenter to Lv 11 and Blacksmith to Lv 1 — so no single class can finish it unaided.

All 4 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, Bronze Ingot has the widest use: 76 recipes call for it, spanning six of the eight crafting classes.