Factory Staircase

Taken all the way down to base materials, one Factory Staircase is 2 crafting steps deep and needs 2 intermediates — Dwarven Mythril Ingot ×7 and Titanbronze Ingot ×4 — which resolve to 5 distinct raw materials totalling 56 units, plus 91 crystals.

That bill outweighs 12,997 of the 13,602 recipes tracked here and 1,379 of the 1,441 Armorer ones, and 4,464 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 77 are burned by the intermediates, so the real crystal cost is 77 Fire Crystal, 7 Earth Crystal and 7 Ice Crystal.

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.