Learn how to make a homemade metal detector using batteries with step-by-step instructions, tips, and tricks to create a ...

Scanning parks and beaches with one of these can be a unique and fascinating hobby.

Georgia lawmakers may require that every public school student be checked for weapons each day.

Debinding and sintering are the make-or-break stages of 3D printing with metal powder filament. With a small, tabletop 3D ...

Social media users shared some imaginative theories on what the device could be, from a "bug sweeper" to a "photo electric ...

[Tony Messina] had been fascinated with bat’s echolocation since he was a kid. After he retired, he decided to act on this fascination and built a simple bat detector. The simple bat detector uses ...

ETFs offer an easy way to invest in precious metals without the costs and risks of physical ownership. Top precious metals ETFs directly hold metals in bank vaults, enabling them to deliver returns ...