Track Night-Launched Projectiles with LEDs
Have fun and do science by flying toy rockets with an LED tracking light.
Build a Delay Timer that Doesn’t Suck (Energy)
Build a clever timer circuit that draws no current at all between cycles — zero power!
Heat-Treat Steel for a Rubber Band Shooter
Learn how to heat-treat and toughen the metal that built our world: carbon steel.
Intricate Paper Sculptures Make Microbes Beautiful
Rogan Brown makes four-dimensional paper sculptures of microbes. He calls himself a scientific surrealist, and the fourth dimension is time.
5 Techniques to Spray Paint Like a Pro
Using spray paint may seem like a straightforward process, but if you’re not familiar with it, the results can be disappointing. Here are some tips and tricks to ensure that your paint job comes out as beautiful as you’d expect.
Skill Builder: Know Your Rivets
Rivets are one of the oldest, most reliable methods for permanently fastening two materials together. Here we’ll look at two of the most common rivets used in the home workshop.
Learn the Basics of Spread Spectrum R/C
Entering the world of radio-control (R/C) hobbies can be a little daunting. To make it a bit easier to get started, we’ll cover the basics of 2.4GHz spread spectrum radio control, and the different pieces of a typical R/C system.