Reinforced Spruce Plywood ★★★

Taken all the way down to base materials, one Reinforced Spruce Plywood is 3 crafting steps deep and needs 3 intermediates — Spruce Plywood ×1, Horn Glue ×2 and Spruce Lumber ×1 — which resolve to 3 distinct raw materials totalling 9 units, plus 53 crystals.

That bill outweighs 5,492 of the 13,602 recipes tracked here and 549 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 23 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 23 Wind Shard, 21 Ice Shard, 6 Water Shard and 1 other kind.

The chain crosses two disciplines — Carpenter to Lv 50 and Alchemist to Lv 30 — so no single class can finish it unaided.

1 of the 3 raw materials come out of the ground, and one of them is time-gated: Spruce Log (9:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Spruce Lumber has the widest use: 60 recipes call for it, spanning six of the eight crafting classes.