Oaken Bench

Taken all the way down to base materials, one Oaken Bench is 3 crafting steps deep and needs 3 intermediates — Steel Ingot ×6, Oak Lumber ×2 and Steel Rivets ×2 — which resolve to 3 distinct raw materials totalling 24 units, plus 31 crystals.

That bill outweighs 8,926 of the 13,602 recipes tracked here and 1,021 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 7 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 22 Fire Shard, 6 Wind Shard and 3 Earth Shard.

The chain crosses two disciplines — Blacksmith to Lv 33 and Carpenter to Lv 32 — 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, Steel Ingot has the widest use: 125 recipes call for it, spanning seven of the eight crafting classes.