Iron Headgear

Taken all the way down to base materials, one Iron Headgear is 3 crafting steps deep and needs 4 intermediates — Iron Plate ×2, Aldgoat Leather ×1, Iron Rivets ×1 and 1 other — which resolve to 3 distinct raw materials totalling 17 units, plus 12 crystals.

That bill outweighs 7,161 of the 13,602 recipes tracked here and 660 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 9 are burned by the intermediates, so the real crystal cost is 6 Fire Shard, 4 Ice Shard and 2 Earth Shard.

The chain crosses three disciplines — Armorer to Lv 22, Blacksmith to Lv 18 and Leatherworker to Lv 17 — so no single class can finish it unaided.

2 of the 3 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, Iron Ingot has the widest use: 113 recipes call for it, spanning seven of the eight crafting classes.