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 ...

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 ...

Bad threads, and repair procedures, right. Broken studs and stripped threads are not always the product of the overzealous neophite. Several factors cause thread damage: Wear from repeated assemblies ...

Few things seem more hopeless than when you’re in the process of removing a bolt, screw, or stud and it breaks. At that point, you know it’s all over but the crying. You’ve busted a bolt off in a ...

Spark plugs that haven't been changed for a long time can become one with the cylinder head. Fortunately, it's possible to repair damaged threads instead of scrapping the head. (Photograph by Chris ...

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