Factory Interior Wall

Taken all the way down to base materials, one Factory Interior Wall is 3 crafting steps deep and needs 3 intermediates — Dwarven Mythril Ingot ×12, Cobalt Plate ×4 and Cobalt Ingot ×8 — which resolve to 5 distinct raw materials totalling 86 units, plus 158 crystals.

That bill outweighs 13,427 of the 13,602 recipes tracked here and 1,417 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 144 are burned by the intermediates, so the real crystal cost is 84 Fire Crystal, 40 Fire Shard, 20 Ice Shard and 2 other kinds.

The chain crosses two disciplines — Armorer to Lv 80 and Blacksmith to Lv 78 — so no single class can finish it unaided.

4 of the 5 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, Dwarven Mythril Ingot has the widest use: 168 recipes call for it, spanning seven of the eight crafting classes.