Quote:
Originally Posted by
Gas_Up_Lets_Go
5) using an oversized Allen key, hammer it into the bolt, or if you have a Torx bit, they work too. Using an impact driver will help.
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Following on from this, it's not necessary to use an oversize bit...
If you hammer the head of the allen bolt (this works particularly well with button head rather than socket head, but socket heads still work if you hit them hard enough x) so that the rounded off faces look like a hexagon again, hopefully a bit smaller and tighter than before...
Then hammer in an allen key so it is a really snug fit (a socket type one is a good idea as you can get more leverage, but it works fine with regular allen keys too, although it's a good idea to use some sort of extension bar, such as a plug spanner over the long end of the allen key, again for more torque/leverage)... you'll find more often than not that the impact of the hammering, together with the snug (interference) fit of the allen key in the compressed socket, will have the bolt free...
I have done this on a number of occasions... and recently won a significant bet, when a friend said it wouldn't work... she has yet to eat my deep fried sandal!
Jx
ps. if you are happy to forfeit the bolt and allen key, you can even add a dab of superglue into the socket before you hammer in the allen key - I did this earlier this week with a bolt on my mountainbike suspension that has resolutely refused to budge for over 14 years... once the glue had set, a bit of leverage and it popped out a treat!