Twist drills do not make accurately sized or good finish holes; a reamer of some type is often used to cut the final size and finish. A reamer will not make the original hole; it will only enlarge a ...

When people are designing lightweight products, or repairing a worn-out thread, a dependable fastening tool can make a big difference. This is where self tapping threaded inserts can come into play.

Tool targeted at auto industry puts threads in aluminum and other soft metals. A few years ago, engineers and management at Emuge Corp., a leading maker of taps, drills, and other rotary tools, ...