Bertha Cannon ★

Taken all the way down to base materials, one Bertha Cannon is 3 crafting steps deep and needs 3 intermediates — Darksteel Nugget ×8, Cobalt Plate ×2 and Cobalt Ingot ×4 — which resolve to 4 distinct raw materials totalling 40 units, plus 59 crystals.

That bill outweighs 11,825 of the 13,602 recipes tracked here and 1,447 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 54 are burned by the intermediates, so the real crystal cost is 27 Fire Crystal, 20 Fire Shard, 10 Ice Shard and 1 other kind.

The chain crosses two disciplines — Blacksmith to Lv 50 and Armorer to Lv 43 — so no single class can finish it unaided.

3 of the 4 raw materials come out of the ground, and one of them is time-gated: Darksteel Ore (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.