Dwarven Mythril Chainmail of Fending

Taken all the way down to base materials, one Dwarven Mythril Chainmail of Fending is 3 crafting steps deep and needs 6 intermediates — Dwarven Mythril Ingot ×2, Grade 1 Vitality Alkahest ×2, Bright Linen Yarn ×1 and 3 others — which resolve to 10 distinct raw materials totalling 29 units, plus 51 crystals.

That bill outweighs 10,170 of the 13,602 recipes tracked here and 1,028 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 37 are burned by the intermediates, so the real crystal cost is 14 Earth Crystal, 14 Fire Crystal, 10 Lightning Crystal and 2 other kinds.

The chain crosses five disciplines — Armorer to Lv 78, Blacksmith to Lv 78, Leatherworker to Lv 78, Weaver to Lv 78 and Alchemist to Lv 73 — so no single class can finish it unaided.

7 of the 10 raw materials match a gathering node, none of them timed; the other 3 come 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.