Grub Screw

conjon

Ok so it looks like when tightening a coil I've knackered the threading on a grub screw and for the life of me I can't get it out. I've tried everything from other Allen keys to screwdrivers. I can't get a grip to get the bugger out..

Has anyone encountered this? Any tips?

Thanks
Conor

TinCool

try placing a rubber band over the hole of the screw and put your screwdriver or alan key on top of the rubber band. so the rubber band is between the screwdriver and screw if you know what I mean. It may give you enough grip to turn it.

Phill_M

Is it the head of the screw where the Allen key or screwdriver inserts, or is it the actual threading along the side of the screw?

If it was the head, you can melt a little bit plastic onto the end of the screwdriver or Allen key and insert it into the screw before it sets. Then you have a tighter fit and can get enough purchase to turn it.

If the actual threading along the sides is gone, I'd probably try a tiny drill bit in a Dremel or something similar, drill through the middle of the screw and try to put pressure on the threads by pulling it towards you and then try turning it out. I'd do that when all else fails, and probably best clamping down the deck in a small vice.

conjon

Phill_M wrote: »

Is it the head of the screw where the Allen key or screwdriver inserts, or is it the actual threading along the side of the screw?

If it was the head, you can melt a little bit plastic onto the end of the screwdriver or Allen key and insert it into the screw before it sets. Then you have a tighter fit and can get enough purchase to turn it.

If the actual threading along the sides is gone, I'd probably try a tiny drill bit in a Dremel or something similar, drill through the middle of the screw and try to put pressure on the threads by pulling it towards you and then try turning it out. I'd do that when all else fails, and probably best clamping down the deck in a small vice.

Cheers Phil. It's the head, I can't get any traction . I'll try that melted plastic idea later. That's clever!

Much appreciated

IRISH OS1R1S

I've done this in the past, works a charm. Use the smallest dremel cutting blade you can find, grind a slot across the head, then unscrew with a flat-head screwdriver.