We like it when hacks are literal hack jobs, put together with what’s on hand to do a specific job. This quick and dirty angle grinder circle cutter certainly fills the bill, and makes decent cuts in ...

In everyday life, we use magnets in a variety of ways, from holding notes on a refrigerator to securely locking a safe or a cabinet door. Electromagnets are especially useful because the magnetic ...

A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core makes ...