Swords for Plowshares

One allowance here buys 617,600 EXP, which places it 2nd of the 3 Lv 58 Blacksmith tradecraft leves that record EXP. The best of them, Winter Weather Conditions, returns 811,360 EXP for the same allowance, 31% more.

Across that rung the return runs from 235,890 EXP to 811,360 EXP per allowance — 3 distinct figures spanning 244%, so the wrong pick leaves 575,470 EXP of the allowance unspent.

On whether to wait: the best Lv 60 Blacksmith tradecraft leve returns 703,720 EXP per allowance, 13% less than the best on this rung, while the Lv 56 rung behind tops out at 731,480 EXP.

At Lv 58 this data holds 54 leves paying EXP across 3 categories: the 24 Tradecraft ones average 443,090 EXP per allowance, the 3 Fieldcraft ones 1,079,567 EXP and the 27 Grand Company ones 228,371 EXP, which puts this leve 39% above its own category's average.

Gil ranks it differently: 406 gil per allowance is 3rd of 3 on the same rung against 2nd on EXP, with the best there paying 1,248 gil.

Adamantite Zweihander ×1 is a Lv 58 Blacksmith recipe, 2 steps deep through 5 intermediates, costing 52 units of raw material and 54 crystals.

Handing that in returns 11,877 EXP and 8 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Blacksmith, Carpenter, Goldsmith and Leatherworker.