Thanks to a commenter on last week’s Now That’s A Knife post for pointing out that Jeremy Hanson’s Spudgun Technology Center has a custom machine for rifling PVC pipe to make more accurate barrels for potato cannon. They sell several varieties of rifled PVC (including clear) in assorted lengths. The way I hear it, the rifling machine was first designed and build by STC founder Ed Goldmann. [Thanks, Bryce Bell!]
Andrew D. Carson of Glendale, Wisconsin, whose classic recycled recumbent build came in 3rd in yesterday’s roundup of most-trafficked recumbent bike posts, contacted us and asked that we post a more modern picture of his Mach 2 frame. Looks great, A.D.!
After a quick search of the posts I’ve written for MAKE, it’s clear that I overuse the word “awesome.” It’s not news to me, but I had no idea how bad my problem was. In fact, I think you could say that I abuse the word. In order to cut down on my usage of […]
Trikes, too! No quads in here, though. That’s something we shall have to remedy, in future.
I’m slightly confused by my own reaction to this concept from Korean designer Sungho Lee: Intuitively, I love it! Super cool! How clever! I want to make a bunch of my own—as I imagine Mr. Lee did—by cutting up some paper clips, clipping the leads on a bunch of LEDs, and soldering the one to the other.
Make: Online readers who are secret agents—or secret agent wannabes—will love this project, which comes to us from MAKE Volume 16. By replacing the ink in a color inkjet cartridge with concentrated lemon juice, you can print with invisible ink. The secret message is revealed by spraying or wiping the paper with iodine tincture. Here’s […]
I don’t know about you, but I’m so used to the paradigm established by old-style incandescent bulbs that when one of my CFL’s “blows out,” it doesn’t even occur to me that I might be able to repair it in the garage. Or at least, it didn’t until I saw this page from Pavel Ruzicka, which does a good job of explaining the general principles of operation of CFL lamps and gives great details about their most common failure modes. Apparently, replacing a single capacitor will often do the trick. [via Hack a Day]
