Gerald Miller wrote:

OTOH, Robertson drive fasteners are automatically held in place by the
tapered mating surfaces of the driver.


Not the ones I've seen and had to remove. Every damn one of them was
sloppy, and I burnt up a bit about every six screws because they would
wear down the corners till they just spun in the screw heads..


--
You can't have a sense of humor, if you have no sense.