Yamaha TRX850 Enthusiasts Forum

Head is off bike and I just drilled out one broken stud no problem. Drilling the second one I've managed to snap a 2mm drill bit off in the stud and I'm stumped. Have tried drilling it with a carbide centre bit but it's not happening. Stud is recessed so I can't weld to it.........HELP

I'm sure that in a city like Manchester there would be several firms that do spark erosion. Show them your head and see what they can do. Ive seen a spark eroder and a good operator remove even broken carbide taps from a hole leaving the threaded hole undamaged.

Aww that's tubbaad bubbaad Try these http://www.sparkeroding.co.uk/

£20 quids worth of drill bits later and arms like Popeye ..........Done.........Will have to retap to M10 though.....
Thanks for the info guys, didn't know about that .