They hold together everything from the most delicate watch to the largest bridge. The world is literally kept from coming apart by screws and bolts, and yet we don’t often give a thought to these ...

One of the challenges with 3D printing is seeing how far designs can be pushed before they break. This includes aspects like flexible hinges and structural components, but also smaller details such as ...

Self-tapping screws are designed to create their own threads as they are driven into masonry. Unlike other fasteners, contractors do need to drill a hole or tap threads in a separate step. This ...

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 ...

Attaching metal pieces to one another with a screw is relatively straightforward. But using threaded fasteners on plastics, which are lightweight, low-density materials compared to metals, can be ...