Iron Dolabra

Taken all the way down to base materials, one Iron Dolabra is 3 crafting steps deep and needs 4 intermediates — Iron Ingot ×3, Aldgoat Leather ×1, Iron Plate ×1 and 1 other — which resolve to 4 distinct raw materials totalling 14 units, plus 12 crystals.

That bill outweighs 6,557 of the 13,602 recipes tracked here and 699 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 7 are burned by the intermediates, so the real crystal cost is 6 Fire Shard, 3 Earth Shard, 2 Wind Shard and 1 other kind.

The chain crosses four disciplines — Blacksmith to Lv 27, Carpenter to Lv 25, Leatherworker to Lv 17 and Armorer to Lv 14 — so no single class can finish it unaided.

3 of the 4 raw materials match a gathering node, none of them timed; the other 1 comes from vendors, drops or content this site does not track.

Of the intermediates, Walnut Lumber has the widest use: 128 recipes call for it, spanning eight of the eight crafting classes.