Ive been wondering,since Ironowood shaft tech kit (not the andorr one) is crafted ,shouldn't it attune only when you actually eqip item? In similar way to piercing winds,razor teeth,battle-forged etc which attune only when you actually eqip the item. that way you could sell and trade already teched gear.
I didn't check Undead slayer tech kit yet.
EDIT: Crafted Undead slayer is behaving the same way. Imho they shouldn't if they were crafted.
On side note, Thurids undead slaying kit is 14 dps while crafted is 20. isn't thurids supposed to be stronger?? o.O