Last option is rotary tool again, grind that head clean off. If there’s enough exposed shaft after the part removal then turn with vice grips. Hopefully you used brand name Loc-tite.
Otherwise its screw extract time. I suggest Micro-grabits. Only reliable option IME.
Last option is rotary tool again, grind that head clean off. If there’s enough exposed shaft after the part removal then turn with vice grips. Hopefully you used brand name Loc-tite.
Otherwise its screw extract time. I suggest Micro-grabits. Only reliable option IME.
Apply some heat to the bolt with a tiny tiny torch to hopefully not damage the aluminum nearby? Should help release the threadlocker.