How To: NASA Engineer Shows You How to Build a Mini Curiosity Mars Rover Out of LEGOs

You might have seen our post on this last week: It's a working reproduction of the Mars Curiosity Rover made with LEGOs, but it's a bit complicated for anyone without a decent amount of robotics knowledge. Plus, you need to have some Mindstorms NXT and TECHNIC parts lying around. If you want something a little simpler than programming a working LEGO rover, you could always build a scaled model of the MSL out of regular LEGOs. Not only is this easy to build and looks great, but the step-by-ste...

How To: Make a catapult out of office supplies

Looking for something fun to do with all those office supplies you've been stealing from work? Or maybe you just want to goof around in your cubicle? It's possible that you are an honest, dedicated, hard worker, but whatever the case may be- no judgement, just a video guide to making an office supply catapult.

How To: Make a homemade stirling engine

Are you looking to build a cool home science experiement? Why not try out a Stirling engine? Wait, what IS a stirling engine? Well... a Stirling engine is a heat engine operating by cyclic compression and expansion of air or other gas, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work. This project was made from parts around the house and you should be able to do the same. This is a great project to explain how gears work,...

How To: Make a fast and easy tennis ball trebuchet

In this tutorial, we learn how to make a fast and easy tennis ball trebuchet. This tool will throw tennis balls easily so you can hit them without having a partner around. This only needs a few pieces of wood and 2x4's along with dumbbells. There isn't a whole lot to this, it's very simple to build. Use two 10 lb dumbbells clamped with a hose clamp onto the top of a 2x4. Use a dowel to go through this, so it will help it rotate. Down at the bottom is the release mechanism and on the sides wil...

How To: Make a small, easy, functional telescope

In this tutorial, we learn how to make a small, easy, functional telescope. First, glue a lens in place with glue underneath a piece of cardboard with a circle cut in it. Then, cut this into a circle and tape it to a paper towel holder. Then, you can wrap this in some paper mache around the cardboard. Then, wait for this to dry and spray paint it with gold and black paint. When finished, you will have a functional telescope ready to go and use! This is cheap and a fun project to make with chi...

How To: Construct a mousetrap car

In this tutorial, we learn how to construct a mouse trap car. You will need: wood, string, wood glue, duct tape, scissors, markers, a mousetrap, wheels, and a drill to do this. To start, you will lift the mousetrap up and tape duct tape around it along with a long stick. Then, tape this to a piece of wood. From here, you will glue together two sticks and then put wheels on the top and bottom of it. Next, you will lay the mousetrap on top of this and then push it. Then it will roll away! You c...

How To: Build a simple mouse trap car

In this tutorial, we learn how to build a simple mouse trap car. To do this, you will need: a ruler, two records, a thin metal rod, and a mousetrap. First, you will lay the ruler down to measure out where you are going to place the records. Next, you will hold these into place by using the metal rod in between the two of them. If it's not secure, use washers and glue to keep it in the proper place. Then, attach the mousetrap to the middle of the rod in between the records. This is it! Now you...

How To: Build your own Japanese katana out of foam

If you're looking to play a samurai or other Japanese inspired character at your next boffer larp, this tutorial is for you. You're shown how to build a foam katana using duct tape, a razor blade, measuring tape, cloth athletic tape, DAP contact cement, liquid craft latex, fabric to cover your blade, rope, fiberglass core, and of course, foam!

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