I remember seeing a demonstration of a seemingly magic process at an engineering open house decades ago, in which a soft metal bit carved detailed shapes into far harder metals. It's called electrochemical machining (ECM), and it's so simple in principle that you can do it at home with a drill press, a battery charger and a pump for a garden fountain.
You've successfully tested the limits of how much can fit into a #10 envelope without bursting its seams, but now you're questioning how much postage you need. Sure you could just slap a few of the new 44-cent stamps onto whatever you're sending and be done with it, but that's good money you're throwing away.
Instead, spend just a few bucks now to build a simple magnetic postage scale, newly updated from an original article in the February 1971 issue of Popular Science.
For all he's done and all he's taught you, you'd think dear old Dad would be honored more than one day out of the year. And if you want to get technical, had he not teamed up with mom on that one long-ago DIY project, you wouldn't be reading this right now. So this Father's Day, pay homage to his tinkering spirit with something he'll use in future acts of glorious creation.
Throughout this guide, you'll find a wide selection of tools from free iPhone apps to a budget-busting hammer drill; an oh-so-convenient cordless glue gun and soldering tool; plus a variety of things to help him amp up his environmentalism, his swing, his gut, and his chances of getting a speeding ticket.
By Mike RigsbyPosted 06.10.2009 at 7:29 pm 8 Comments
You're late for work. As you hustle out the front door, the furthest thing from your mind is the afternoon's dentist appointment that you'd scheduled last week. You'd have probably forgotten all about it — if you hadn't thought ahead by programming a home-built device to give you a voice reminder as you pass it on your way out.
Our third updated DIY project from the Popular Science digital archives involves luring and then trapping bugs that have managed to find their way inside your house--a truly universal problem. Follow along as we update a circa-1971 trap for today's smarter, more intelligent insects for less than $20.
It's official: Santa showed up a little early this year. The unveiling of the Popular Science archives on Google was, last week, a very big deal. Our readers and fans can now search and browse over 136 years' worth of the future then and now whenever they damn well please.
Ever resourceful, PopSci DIY-ers are already doing what they do best. Instructables.com member TimAnderson created a gas mask using instructions in a December 1942 Popular Science Article. How awesome is that?
Trouble with instructions? You’re not alone. Researchers at the University of Michigan have confirmed that difficult-to-read instructions dissuade people from embarking on tasks, and impart a suspicion in their readers that the task at hand will be difficult. As far as I’m concerned, this is major vindication.
The ghosts and goblins may be prowling about for tonight and tonight only, but the DIY-ers are keeping the terror alive. In fact, the Instructables.com DIY Halloween Contest is open for entries until November 9, and there are over $7,000 worth of prizes up for grabs.