.....I was removing my square taper crank arms to change the dead BB on my Inbred, I got one off no problems but the other (drive-side) bolt head rounded out just as the arm was beginning to move. It's so circular that no Allen key is going to turn it now.
I'm annoyed as the heads seem to be made of cheese (they're Middleburn - I would have thought they'd be made of Stronganium). So - any thoughts of how to remove it without resorting to drills or explosives? Also any tips for more robust crank bolts to replace them with? (I am guessing this is not an unusual problem.....).
Thanks in advance.

