On 11/07/2019 14:52, David wrote:
Having replaced my dud little electrical screwdriver with the cheapo
MacAlister one from Screwfix I am now searching for the best bit size for
slotted screws which are in light switch and 13A sockets.

Measuring the width they look to be about 7mm.

So do I co for a 7mm bit, or slightly under size with a 6mm bit?

I seem to be awash with Posidrive bits at the moment but not ones for
slotted screws.


Grind a pozidrive bit down to a flat bit of your desired size.