Oh dear.
I've just sheared off the cable clamping bolt on my rear mech.
Now I don't have a drillbit strong enough to cut through the bolt to get it out that way, so would hacksawing a slot through the mech and remaining bolt weaken the mech in any way to cause failure?
Last thing I want to do is have the mech dismantle itself the first time I change gear..
Cheers in advance folks.

