I need a big screwdriver (and I mean big compared to what we normally use for bikes etc), but am having trouble finding something. Anyone got any tips on where to get one? P.S. This is because I have butcherd a seized bolt by slotting the head, but the slot is big and now I need a screwdriver to fit it.
Do you mean you have chewed up the head? If so place an elastic band flat over the head and then put the screwdriver onto that. This gives it a good grip in the head and will come undone with ease
any good diy store should do them, I personally use the impact driver I got from halfords. had some real wide flat head bits that would work Halfords | Halfords Advanced Impact Driver & Bits
These are also handy if you rounded the head on a bolt, if you cant undo with a spanner u have no chance with a screwdriver.
It's an allen head. I chewed it up with a hex key. Then I slotted it with a dremel. I now need a huge screwdriver because it's not accessible enough to use anything else. I'm going to try the elastic band and quite large screwdriver suggestion though
Mmm, sometimes a dot punch also works to drive them round, before the slot Id have used a star or torx star is better... pita that!
JM1, If all else fails and you can get a drill to it? There's easy outs 'screw extractors' around £15 a set, got be out the poo on a few occasions.
That will tap round with a small nail punch or similar, I come across this situation quite often at work. The tapping will loosen and corrosion and get it turning.
Thanks gents, sounds like an extractor for me, or a nail punch (but I don't know what that is yet!) Not sure why it's stuck - bike is nearly new, no corrosion at all in the area. It was just really tight with a very shallow head in a confined space (that's my excuse anyway).
I had bolts like that stuck before, they used generous amounts of thread lock along with the odd bit of damp in there made it a right nightmare to remove.I drilled the center and then used a punch to get it out.
