Smartbolts have little discs in their heads that change color as the right amount of tension is applied to them. I recently installed a child safety gate with a similar mechanism: a red, spongy washer between the bolt and the frame; once the right amount of tension was on the bolt, the washer was squished down so much it disappeared and you could stop tightening.
Unfortunately, a torque-wrench does not measure bolt tension accurately, usually only about +/- 30%, because it does not take friction into account. The friction depends on bolt, nut, washer-material, plating, surface smoothness, machining accuracy, degree of lubrication and the number of times a bolt has been tightened. Fastener manufacturers often provide information for determining torque requirements for tightening various bolts, accounting for friction and other effects. However, in field applications, this information is often not available, practical or administered poorly.
(via Red Ferret
Dyson, makers of high-end vacuum cleaners and other gadgets that do clever things with air, is moving into beauty products. The Dyson Supersonic hair dryer promises a premium model’s power in a smaller, quieter package, and was built around the company’s smallest motor yet. It’s priced at $400, too — apparently not unreasonable for salon […]
Doniguitar — makers of the Rebel Bass Millennium Falcon bass guitar — also make the NES Paul, a guitar whose body is made from hollowed out, vintage Nintendo Entertainment Systems.
For years, Geoff Manaugh has entertained and fascinated us with his BLDGBLOG, and now he’s even better at full-length, with A Burglar’s Guide to the City (previously), a multidisciplinary, eclectic, voraciously readable book that views architecture, built environments, and cities themselves through the lens of breaking-and-entering.
You never know when new projects, ideas or opportunities can drop into your lap at a moment’s notice. That may require you to learn a new programming language like Python. Or maybe you need a primer on 3D game development. Or you might realize you could use a serious brush-up on iOS mobile creation.Point is, […]
Isn’t it about time to stretch what your Mac can do? I mean, you’ve got plenty of great programs now…but don’t you think you could use some new tools to get your creative, analytical and organizational juices really flowing? It’s spring, so we cleaned up a whole bunch of super-cool apps lying around and packaged […]
In the world of app development, there’s no greater arena to find success than with Android users. About 80% of the smartphones in use today worldwide operate on the Android operating system, so if you build a great app that Android users love, you’re an international rock star. You’ll be able to make sure your […]