Broken tiny tap in aluminium

[Wongster]

Hi guys,

Me again seeking help...

I was onto my last piece and last tap hole making endstop holders for a Kossel Mini 3D printer that the tiny M2.5 tap broke in the hole.  I googled around for solution(s) but couldn't find something I can try.  There was one I found that talked about dissolving the tap but I'm unable to get the chemical here in SG.

Here's the pic:



This is what I am trying to make.  Completed 2 without problem.  The hole I was tapping is the last hole before the ops on the flip side.



Hope I can avoid doing the last piece all over again and move on to the next part.

Thank you in advance.