Jet Engine Assembly Tool - M3 Nut Holder

thingiverse

If you're tired of wrestling with the fan stator casing and the HPC casing, this tool is about to become your new best friend. Simply pop an M3 nut into the socket, then hold it up against the hole and drive a bolt right through. You can use it as a makeshift wrench or just rely on it to keep that nut steady while you thread the bolt in - whichever works better for you.