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: Create a ship in a bottle

The ship in a bottle is an age old puzzle. The key to its mystery is pre-assembly, attention to detail and patience. Learn from a master craftsman and bottle ship builder the ins & outs of this art. Follow these step by step instructions on how to put a ship inside of a bottle.

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 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: 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 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: 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: Build a LEGO pick up truck

In this video, we learn how to build a LEGO pickup truck. First, you will need to lay out all the parts that you need to build the truck. This includes small and large parts that are in gray and white colors, as well as wheels. Start off by building the middle of the car, making room for the wheels to fit in. After this, start to add on the blocks that go on the back and the front to make the headlights and different features on the truck. Add on the block for the windshield, then add on the ...

How To: Build a spy periscope

This video is to show you how to construct a super cool spy gadget! You'll need some toilet paper tubes, tape, scissors, glue and an old CD. Then, just like that you'll be able to make home made spy gear in no time.

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 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...

How To: Make a basic rubber band car

To make a rubber band car you will need one sheet of card stock, four paper clips, two binder clips, one plastic straw, 8 inches of dowel that fits into the straw, two pencils and one rubber band. You will also need four CDs or round pies of cardboard, tape, a ruler and a marking pen. First, unfold the paper clips. Then fold the card stock and attach the paper clips. Cut squares out of the card stock. Then, cut the straw. Attach it to the card stock. Affix the pencils to the card stock with h...

How To: Make Nerf foam darts fly

Want more firepower for your Nerf guns? Here's an instructional video that shows a simple mod to make your foam darts fly! Increase their range by 25%. Watch this video tutorial and improve your game playing, but please, use caution!

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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