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 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 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 boomerang out of styrofoam cups

Crazy Chris shows us how to make a cool boomerang out of two Styrofoam cups - useful as a party trick. Plastic and paper cups can also be used. The bottoms of the cups are taped together. The key to making the boomerang work is the positioning of the fingers on the cups. The middle finger should be placed in the middle joint of the two cups - the fingernail in contact with the tape. The pointer and ring fingers should support the top of the cups and the thumb gives the bottom support. Chris t...

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 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 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: 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 your own mylar balloon

Mylar balloons are the best party favors. They are big and shiny and last longer than normal latex balloons. In this tutorial, learn how to make a mylar balloon at home, from scratch. Stop spending so much money at the party store, and next time you have a big event, make your own! Not only will you save money, but it will give your party a cool personal touch.

How To: Make a LEGO Menorah

This tutorial demonstrates how to make LEGO Menorah which is used for decorative purposes. First a 1/3 angle brick and a transparent red color stud dot are taken. Then three red cans are taken. Now one of the red can is fixed to one side of the angle brick, leaving the middle open, fix one more can on the other side. The red stud is placed on the middle, on top of which the third can is placed. Now the first menorah is formed which can be placed on tables, walls, etc.

How To: Take apart a laser pointer

Have you ever had a combination of extreme boredom and an unrelenting curiosity? If so one thing you may have attempted to do is to take apart or "de-engineer" a common office laser pointer. In this online video we are shown how to take apart a cheap laser pointer. It should be noted if you are going to attempt to do this you should only try it on a laser pointer that is inexpensive so your loss will not be great if you should make an error.

How To: Make an air vortex cannon

You've seen what a vortex cannon can do, so now it's time to build your own! Okay, this air vortex cannon is not huge, but it's definitely a fun thing to construct if you have some junk plastic laying around, and it works really well for its size. Grab a cheap plastic container and follow along to the video instructions and build yourself a homemade vortex cannon!

How To: Make an Internally Lit Ice Sculpture with LED Lights

Why not make the best of an icy cold winter day and make something even cooler? In this tutorial, you will learn how to make a natural ice sculpture in your yard and light it up with LED lights for a cool, nighttime effect. You will definitely have the best house on the block once you start lighting up your ice, so check this video out and get started! This project is super quick and cheap to create, too!

How To: Build spinning tops with everyday objects

In this tutorial, we learn how to build spinning tops with everyday objects. You will need: round recyclable plastic lids, skewers, hot glue gun, and washers or pennies. First, take your plastic lid and weight it with a penny, then poke a skewer through the middle of it. After this, you will have a top made out of homemade products! You can use anything that is laying around your home to make a top, no matter what it is. Just make sure you have something to place int he middle and the weight ...

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 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 LEGO arm chair

Learn how to make a LEGO Armchair with this video tutorial. You will need 4 1x2 flats, 1 2x2 flat, 1 2x2 flat smooth, 2 1x3 chunkies, 1 1x4 flat, 2 2x3 flats, 1 1x2 chunky, 2 curved 2x1 angle bricks, and 3 1x2 flat smooths. Take the four dots and take 1 1x2 flat and place it on top of one of the studs. Take the other flat and do the same. With the 1x4 flat, place it on top of the remaining two black studs. Take your 2 2x3 flats and take the 1x4 with the studs on the top and put them together ...

How To: Make an animatronic hand

Ever feel like you don't have enough hands? Build a third one! You will need a 3 foot aluminum rod, a piece of 2 inch by 4 inch wood, a 25 pack of 1/8 in by 2 inch toggle bolts, #6 by 1/2 inch metal screws, an electric drill, drill bits, 14 inch cable ties, and a hacksaw or chop saw. Watch this video tutorial and learn how to build an animatronic robot hand.

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: 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...

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