Thanks for the replies as there's some very good tips in there. For the record, I've had trouble with both taking them out and putting them back in.
I usually advise people that there's little point in re-shafting them because of the time (and therefore cost) involved in the project and I can make a new standard driver for the same price. However, in this case it was a set given to him by his father and he wants to keep them intact. I suppose the screws could be Reed and Prince or Philips depending on how old the heads are. I take Carls point that the screw heads being ground down flush with the sole causes problems. In this particular wood I'm assuming that they are Philips screws but the screwdriver doesn't seem to get down into the head of the screw to get a good grip if you know what I mean. I'm a great believer in using the right tool and hence my questions. I have done a search on the web for Reed and Prince Screwdrivers with little success. However, I was mainly trying to find out how they differ from Philips and therefore whether or not these are Philips or not. Cheers Graham
