PVC Kids’ Table and Stool
This small table fits young kids perfectly โ and they can scribble to their heartsโ content on the dry-erase tabletop.
PVC pipe
Marshmallow Shooter
Here’s how to make a pair of Marshmallow Shooters. You’ll be ready for combat in minutes! Theyโre made of standard ยฝ” PVC pipe and pipe fittings, which just happen to be a perfect fit for mini marshmallows from the grocery store. Just fit the pieces together, bring a bag of mini marshmallow ammunition, and start […]
Better Nerf Gun
Like most geek-filled offices, at my workplace we have several Nerf guns and similar toy weapons floating about. Not impressed with the performance of my colleague Lesterโs Nerf Maverick, a mainstay of Nerfโs suction-cup-dart-firing โN-Strikeโ series, I decided to build a better Nerf gun myself. Hereโs the result: a simple weapon, single shot only, but […]
Jellyfish Tank
A tank of healthy jellyfish is hypnotically beautiful. Unfortunately, jellies canโt live in a regular aquarium because they get sucked into the filtration pumps or trapped in โdead spotsโ at the edges. This special design creates a laminar flow that keeps jellies safely suspended in the middle of the tank.
Portable Model Rocket Launch Pad
My new dog is terrified of fireworks. This wouldnโt be a problem outside of July 4th โ if I didnโt fly model rockets. But she canโt tell the difference between an Estes B6-4 and a Joyous Family Whistling Fountain, so rockets terrify her too. This makes weekend trips to the organized launches in central Oregon […]
The Chinese Windlass
In the summer of 1860, the Second Opium War was reaching its climax. Three years earlier, Britain and France had invaded Canton, China, in order to expand their trade in such unsavory commodities as opium and indentured servants. Chinese Emperor Xianfeng had resisted the outsiders, and a low-intensity war continued in fits and starts. The […]
On-Demand Benchtop Gas Generator
If you should find yourself in need of small volumes of gas at about atmospheric pressure for a reaction or project, generating it on the bench can be a convenient and inexpensive alternative to buying or renting a gas cylinder. It turns out there are a number of useful gas-generating reactions between solid- and liquid-phase […]
