Sheet metal screws are known as self-tapping fasteners because they cut their own threads into the material (aluminum or plastic), and you don’t need to use a separate tool (called a tap ...

Just how much abuse these plastic screws can withstand was an open question, though, until he did a little torque testing to find out. To run the experiments, [Sanford]’s first stop was Harbor ...

This open-source compression screw grinder aims to make small-scale plastic recyclers easier to build. Coming from the lab of [Joshua Pearce] at the Michigan Technological University in ...