Rudi on Ferrets
Now I don't know what precipitated this tirade against one of God's creatures, but I think the US election would have gotten a lot more interesting if he had stayed on.
The moonlit meanderings of Nanuk, the white bear.
"We are here and it is now. Further than that all human knowledge is moonshine."
Using too small a screwdriver for a given Phillips head screw is likely to damage the screw head, and may damage the screwdriver as well. The correct size screwdriver is the largest one that fits. If you have a full range of sizes available, start with the size one step larger than you think will fit, and work your way down one size at a time until you get to the first one that fits in the screw head. But also see the section on different national specifications for size and shape.
In these days of free trade agreements and globalization, more and more of our tools are being sourced offshore. Consequently, those all-in-one screwdrivers and screwdriver sets do not include the Robertson drive, much to my consternation. Almost all the cabinetry and other woodwork in this house use the venerable Robertson, but could I find any Robertsons in the numerous screw drive sets I've accrued over the years - NO! Sure, I have slot, Phillips, Torx and hex, but not my sainted Robertsons.Not that I mind Torx and hex, which don't strip the heads of your fastener and will hold a screw or bolt singlehanded, but you need a multiplicity of them to ensure you have the right size. Torx, for example, comes in 24 sizes, ranging from T1 to T100, while hex (in both metric and SAE flavours) has at least 37.