alexfekete
- DIY
PopSci.com 5-Minute Project Video: Nut & Bolt Keychain
Downsize your pocket cargo with a custom-fit keychain. Editor Sean Captain ditches the ring and uses more tool than necessary to trim a small bolt to just the right size for his set of keys. (For a slightly different take on the project, see the site that inspired us: carlitoscontraptions.blogspot.com).
2.15.2009 at 01:27pm - Comment by alexfeketeI did something similar to this, but a bit more extreme. Use a chicago style nut and bolt (looks like 2 screws,but one fits inside the other)to get a lower profile, and grind the heads of the keys down so that they are the same width as the shaft (think of a multi blade pocket knife with keys instead of blades). You can use the other keys as a handle to get leverage when you turn the key.
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December 2009: Best of What's New
In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.
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