Since LEDs started powering lights we've seen a huge on something called "lumens." It is a unit of measurement used to quantify how much light is perceived by the human eye. Previously, another popular unit of measurement k… more »

Have you ever browsed through the different models of rifle scopes and sorted them by price? If you are looking at a high-end scope manufacturer don't be surprised if their best models are $3,000 and up. What makes these things so damn expensive? In… more »

HOWTO: Stipple magazines with a soldering iron more »