Screws may be commonplace, but that doesn't mean they're simple. A screw is any shaft with a corkscrew groove carved around its surface and, regardless of their design, screws are usually used to ...

A countersink is often essential when working with screws to ensure the head of the screw is flush with the surface. Depending on your chosen material, the best countersink bit will enable you to ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The common screw may not have been screaming for a makeover, but ...