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How To: Build a looping rolling marble machine with magnetic elevator

Wow! No longer do you have to buy those huge marble machine roller coaster toys — you can DIY one! This video covers the materials, tools and techniques used to make a homemade rolling ball marble machine. If you haven't seen this rolling ball marble machine toy in action yet, WATCH IT. It's a looping rolling marble machine made with wood, rebar tie wire and polyurethane tubing, featuring a magnetic elevator.

How To: Turn a 5MW laser into a 100MW laser

Tired of that dinky little 5MW laser? Turn the power up and convert your 5MW laser into a 100MW laser? A small amount of modification can produce a significantly stronger light coming out of your laser. You will need a small screwdriver (such as a jeweler's screwdriver), needle nose pliers, a soldering iron and some bonding glue to do this properly. This video tutorial will show you exactly how to turn your 5MW laser into a 100MW laser.

How To: Build a LEGO chicken

If you've ever wanted to learn how to build a LEGO chicken, today is your lucky day. First you'll need a 1x1 red LEGO stud, flat square with claw, smooth white, orange with a tooth, flat square, and a flat square with a circle coming out of the side. Starting with the claw, but the stud on top. Now take the piece with the claw and attach that to the opposite side of the claw. Put your flat square on top of that, then the flat with the tooth and another flat square goes on top. Now you're done...

How To: Replace the blade of a utility knife

This is an instructional video featuring Doug Prime, founder of the Future Engineers Center at the University of Massachusetts Lowell. This is an instructional on utility knives that are used to cut foam board and cardboard. The blade replacement is integral to this craft or hobby tool's maintenance.

How To: Build hot air balloon out of a garbage bag

This is a simple and easy tutorial, and anybody can build a hot air balloon out of a garbage bag by following the instructions in it. All one needs is a garbage bag, some stiff industrial wire and fire starter bars. The important thing, according to the author, is to judge how many fire starter bars will be required to make the balloon rise without melting its plastic body. First, two long wires are twisted together in the middle to make an 'X'. A smaller wire is twisted onto the middle of th...

How To: Make a really good paper airplane

This video shows you how to make a very good paper airplane, that will fly in the air for about 10 seconds before it falls. Start by folding your paper in half length-wise, and then at one end fold triangles from the corners into the middle. Then flip your paper over, and fold the same corners in again, so that your paper looks like a taller point. Take the last 3 inches of the point and bend it into the middle of the paper, creating an X out of the folds. Then fold it all in half so that you...

How To: Make a Lego balisong butterfly knife

Balisong knives, or butterfly knives, are folding pocket knifes with two handles that can counter rotate. People love performing tricks with them because of the balisong butterfly knife's flipping ability. Since knives aren't toys, make your balisong butterfly knife out of Legos. You still might hurt yourself, but not as badly as with the real thing. Learn how to build a Lego balisong butterfly knife by watching this video tutorial.

How To: Make a homemade spin toy with a button and string

If you've ever found yourself bored and not knowing what to do, this video tutorial might help you out. See how to make a homemade spin toy with a button. Just get out a pair of scissors, a large button, a glue stick, string and a small piece of paper and you can begin building this time consuming button spinner toy, time consuming as in not hard to make, but fun to play with.

How To: Make a Lego sword

In this video tutorial, viewers learn how to make a LEGO sword. LEGO consists of colorful interlocking plastic bricks and an accompanying array of gears, minifigures and various other parts. This video is very short and only lasts for 35 seconds. It is very basic and easy to follow. This LEGO construction is very simple, fast and easy to do. There are only 3 pieces required to make the LEGO sword. It does not matter what color the pieces are. This video will benefit those viewers who enjoy pl...

How To: Build a rubber band powered mini car launcher

What is it about boys and toy cars? Speed, motors, and lots of fun! In this video, Kipkay shows us how to make a mini toy car launcher that is powered by rubber bands. Make sure an adult supervises this project, as power drills are required. Once it's completed, your kid will have a blast with his or her Hot Wheels and some rubber bands. Don't forget to download the PDF of the project before you start.

How To: Make a rubber band powered car with CD wheels

In this video tutorial, viewers learn how to make a toy car with CD wheels. The materials required for this task are: 2 thread spools, long piece of thing wood, 4 CD's, 2 screws, 2 washers and 2 bolts. Begin by drilling a hole in the spools and 2 holes in the wood. Then place a washer on the screw. Now place the CD on the washer. Then add another washer and secure it by screwing on a bolt. Now put the wheel through the first board of wood. Then put it through the spool and other wood board. N...

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 duct tape backpack

Are you a regular backpack user? Do you tire of that generic Jansport look that seems to be all your low backpack-budget will buy you? Do you want to rock something a bit more distinctive without breaking the bank? Do you like duct tape? Then look no further! This 2-part video provides wonderfully detailed instructions for making a full-sized backpack out of only 45 yards of duct tape! A must for the DIY-happy student-about-town.

How To: Modify your laser pointer

In this video, learn how to modify your laser pointer to make fun, new shapes. This video will show you how to make an extremely cool new toy and impress everyone. Imagine what your class reaction will be when you start pointing to things with a funky shape instead of a typical pointer. Laser pointers are great for presentations, cat toys and just general fun. Why not modify yours and make it your own?

How To: Make a Lego minigun

This is a Hobbies and Toys video tutorial where you will learn how to make a LEGO mini gun. For making this toy, you will need the LEGO mini gun kit. The mini gun consists of eight parts. Probably the pieces do not have names. So, the kid who is demonstrating in this video keeps referring all the parts as pieces. You first take the long grey piece and put a small light grey piece on top and push all the way down. Then you take another similar piece and fix it at the top and leave it aside. Th...

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...

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