We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › If a screw head becomes damaged or stripped, it can be very difficult to remove.

Self-tapping screws are also one of the most important tools at home as well as in metalwork. These distinctive ...

Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so ...

The basic tapping screws are classified as thread forming and thread cutting. Thread-forming tapping screws displace the material adjacent to the pilot hole so it flows around the screw threads.

Roy Underhill shows how to use an 1889 foot-driven metal working lathe. Make your own darn metal screws with this 1889 foot-powered lathe! Roy shows how to cut perfect threads, cones and tapers in ...