(Bill Gurstelle is guest blogging here on Boing Boing. He is the
author of several books including Backyard
Ballistics, and the recently published Absinthe
My friend Christian Ristow was at Maker Faire with his giant pneumatically powered sculpture called Hand of Man. It's great. It's a highly interactive piece in which one puts on a glove with sensors and controls a multi-ton pneumatic hand capable of picking up and crushing a refrigerator.
Photo - Scott Beale at Laughing Squid
About a year or so ago, I worked on a TV pilot for Discovery Channel starring Christian. He is perhaps the most gifted mechanical artist I've ever met.
Ristow designed a machine gun potato cannon which was a true machine gun spud gun. It had a gravity fed magazine that fed spuds into the firing chamber. I've built a lot of spud guns in my time, mostly like those in Backyard Ballistics
. This was a magnitude more powerful and complex. There were four high pressure air tanks that could shoot potatoes continually and at high velocity until the magazine was emptied. I dubbed it "the Quadra-tater."
The airtanks were massive. I calculated the muzzle velocity to be well in excess of 85 mph. The rate of fire depended on the speed with which you turned a crank. The crank controlled five pneumatic solenoid valves, one for the magazine loader and one for each of the air tanks.
It worked absolutely great. We could get 20 or potatoes in the magazine and could empty the thing in much less than a minute. For the finale, the Quadratater, along with a gatling gun that Dave Mathews
built, destroyed a car.
more Quadra-Tator images on my blog at Notes From the Technology Underground
This smallish portable USB charger from Kmashi is rated at 5000mAh and is on sale now for $8.38 when you use promo code: PIRVWBWG on Amazon. I have a few different Kmashi chargers, and have used them for over a year with good results.
The flashlights in our household have a tendency to wander off. Where do they go? I gave my last remaining one to my daughter for a camping trip, so I just reordered an 8-pack of metal LED flashlights for $14. Each flashlight has 9 LEDs and uses 3 AAA cells (included, though some reviewers on […]
Unlike a multimeter, this battery tester isn’t battery powered. Instead, it measures the voltage across the terminals of 9V, AA, AAA, C, D and 1.5V button type batteries. It’s also easier to use than multimeter probes. It’s only $6.61 on Amazon and has a 4.5 star rating with over 1500 reviews.
It’s time for a power upgrade — throw out that tired-out power strip and swap in this family-size USB charger, packed with 6 high-speed ports. With a built-in control chip, Kinkoo optimizes each port to ensure the fastest charging possible for all your devices. The Kinkoo is made from high-grade and durable materials so you […]
Watching Netflix, Hulu or other streaming services can unfortunately be difficult while traveling outside the US. Rather than bypass these restrictions with the help of a complex and slow VPN, choose a faster and simpler solution with Getflix. Instead of rerouting all your Internet traffic through a different server, this handy service only routes the […]
Shake, stir, and muddle your way to delicious homemade cocktails with this must-have bar set. Expect only the finest quality tools from MakersKit — enabling you to unleash your inner mixologist.Top 12 Favorite Things of 2014, Sunset MagazineQuart-size vintage-style Mason jar shakerRetro double jigger for accurate measurementsStrainer & spouts for a mixologist-style smooth pourHardwood muddler […]