Broken stud, with a broken torx bit

[DaveL485]

Basically, broke off a stud flush with the alloy head.

Drilled it out to about 3mm down the middle.....thought i'd be cheeky and knock a T27 torx in there to try and wind it out. You can guess what happened.

Any suggestions or is spark erosion the only option?

[DaveL485]

HRG said:

Are you any good with a dot punch? You may be able to free it that way working from four quarters, but be careful with the softer parent metal if you try. The secret is knowing when you're beaten and not making a bad situation worse IMO.

Lol, beaten, probably. Stubborn, definately. I'll give that a shot though mate cheers.