Everybody who has worked on a car knows the pain and suffering of stripping or damaging threads. It can and will happen to anybody on a wrenching journey, and it often feels like a firm dead-end for ...

The average do-it-yourselfer hates to drill metal, especially steel. We don’t know how many questions readers have submitted and we’ve answered on that topic over the years. Even the most enthusiastic ...

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 ...

Few things disturb us more than the bewilderment of a broken bolt or seized pipe plug in a casting. You’re at a loss for how to get the darned thing out. This is when you have to slow down and come up ...

The strength of some internal threads is more sensitive to tap diameter than previously thought. • Cold-formed threads are no stronger than cut threads when holes are correctly sized. • Cut threads ...