Explore Science & Technology Projects
How To Make a Metal Detector
Like looking for lost treasure? There's no need to break the bank for a high-end metal detector — just dig…more »
How To Make a Water Gun Alarm Clock
Having a little trouble waking up in the morning? There’s nothing like a good soaking to get you going.
How To Make a Trip Wire Alarm
Want a heads up next time that annoyingly chirpy coworker is heading over for some annoyingly chirpy chitchat? Rig up…more »
How To Build a Laser Security System
Got a mystery to solve? Somebody’s been making off with your stuff, and you don’t have a clue who it…more »
How To Make a Homemade Lie Detector
Here's how to make a fun, cheap lie detector that really works! Find out if your friend or spouse is…more »
How To Make an LED Floatie
Light up your world with these beautiful and easy-to-make illuminated balloons. Inspired by the Instructables project: http://www.instructables.com/id/LED-Throwies/
How To Make a Coin Battery
Sure you could take $2.50 and just buy some batteries, but how much fun would that be?
How To Make a Burning Laser Flashlight
Turn a DVD burner into a powerful burning flashlight.
How To Play With CO2 a.k.a. Do Try This At Home Episode 8 - a Real Gas
Mr. G plays with chemicals and fire (what a surprise), for a really cool demonstration. Exothermic reaction and gas displacement…more »
SinkScience #10 - Shake Flashlight Shaker
See MrfixitRick show how to make a wireless magnetic Shake Flashlight Shaker, a whimsical new attachment for his invention, the…more »
Sign in with your Howcast account details.
Join the Howcast community. To create an account in seconds, please complete all the info below.