I’m training in engineering but I can’t equip a blacksmith hammer to be able to create items.
Blacksmiths hammer is a blacksmithing profession tool and idk what engineering craft requires that and not an arclight spanner.
Buy a gnomish army knife on the AH, it will have all the tools you need (for any profession) in one. The tools for engineering are the spanner and a micro-adjuster.
You don’t need to equip this (or the BS hammer in fact); just have it in your bags.