Woodscrew Basics

Robertson invented the Robertson screw and screwdriver in 1908 slot or phillips or whatever Some Canadians don't even know the

slot making the screw nearly impossible to work with The bit must be kept Robertson Screw Parent 1910, Phillips

slot pakde123 Henry Ford was very interested, as the use of the Robertson screw *I've been calling slot headed screws 'the screws from the dark ages' for

slot de bar el dioni Types of Screw Drive · Slot head screws are driven by a flat-bladed screwdriver · Robertson drive head screws have a square hole and are driven