Quote (Quorra @ Feb 24 2019 12:36pm)
The item level matters because that along with prefix and suffix will make the required level. I think if you don't understand how crafting works it is best to ask blizzard for better explanation, I am not good at explaining
(1) ilvl = int(.5 * clvl) + int(.5 * ilvl)
The ilvl calculated in (1) has to undergo two checks and possible modifications. First, ilvl is capped at 99:
(2) if ilvl > 99 then ilvl = 99
Then qlvl and ilvl are compared. The higher number is used for further calculations:
(3) if qlvl > ilvl then ilvl = qlvl
The final step is to determine the affix level. If the ilvl is smaller than 99 – int(qlvl/2) then the affix level is ilvl – int(qlvl/2). Otherwise the affix level is ilvl*2 – 99:
(4) if ilvl < (99 – int(qlvl/2)= then affix level = ilvl - int(qlvl/2) else affix level = ilvl * 2 - 99.
It's also worth noting that the ilvl, the quality and the properties of the jewel are completely irrelevant and don't affect the outcome at all.
Example
The Blood Weapon Recipe is used to craft a Berserker Axe (qlvl = 86) that was dropped by a monster in the Worldstone Tower in hell difficulty (ilvl = 85). The character used for crafting has level 78 (clvl = 78).
First, ilvl has to be calculated: ilvl = int(.5 * 78) + int(.5 * 85) = 39 + 42 = 81.
Then it's checked if the calculated ilvl is higher than 99. This is not the case, so ilvl remains 81. But qlvl 86 is higher than ilvl 81, so the ilvl is set to 86.
Finally, the affix level can be determined: Since 86 is not smaller than (99 - int(86 / 2)) = 56 the affix level is ilvl * 2 - 99, in our example 86 * 2 - 99 = 73.
So all pre- and suffixes with a level up to 73 can spawn on the Crafted Item.
Note: Since the qlvl of amulets is 1 the term int(qlvl/2) is always 0, so the affix level is effectively determined by ilvl, so affix level = ilvl = int(.5 * clvl) + int(.5 * ilvl).
I crafted two more items to show how it works for you

This post was edited by smokepurpp on Feb 24 2019 02:59pm