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How To: Stop Ants from Invading Your Home with These Cheap and Safe DIY Methods

Are ants invading your living space? Start peeling some raw onions. Or add a sprinkle of black pepper to your floor and countertops. Or make yourself some coffee and sprinkle the leftover coffee grounds in areas where ants have been spotted. Somewhere in your pantry shelf or refrigerator, you probably have at least one of the many possible ingredients for repelling ants that doesn't involve reaching for the toxic bug spray.

How To: Make a Hyperbolic Paraboloid Using Skewers

In Monday's post, we created a sliceform model of a hyperbolic paraboloid. In today's post, we will create a similar model using skewers. The hyperbolic paraboloid is a ruled surface, which means that you can create it using only straight lines even though it is curved. In fact, the hyperbolic paraboloid is doubly ruled and is one of only three curved surfaces than can be created using two distinct lines passing through each point. The others are the hyperboloid and the flat plane.

How To: Create Practically Anything, Part 2: 3D Models in SketchUp

Creating any object you want is as simple as point and click if you have a 3D printer at home. If you don't have one handy, there are a few companies that offer printing services online. But to help services realize your design in extruded plastic, you have to make a 3D computer model for the printing machine. For beginners, the free Google SketchUp application is the best choice of software. Using only a few tool bar buttons and a scroll wheel computer mouse, you can model literally any obje...

News: 2009's Wackiest Inventions

As 2009 comes to a close, the Telegraph presents a compilation of this past year's wackiest inventions. As always, here at WonderHowTo, we are inspired and impressed by ingenuity. The contraptions below range from utter silliness (engagement ring bra) to downright amazing (see-through concrete). Check it out.

How To: Catch fish using a football-shaped jig

Large, sweaty men are usually the first thing that comes to mind when you hear the word football, but for this video, we're not talking about the guys on the playing field, we're talking about the guys in the fishing boat, the kind of guys who like to use a "football jig".

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