Laminar Flow Water Fountain
Make a cheap, high-tech nozzle to eliminate turbulence and create incredible water effects.
PVC pipe
Lord Kelvin’s Thunderstorm
Create high-voltage sparks using nothing more than falling water as the source of energy.
Gravity Catapult
I have long been enamored of catapults. Invented around 400 B.C., they were used until nearly A.D. 1300. So for 1,700 years, catapults were arguably the largest, most expensive, and most powerful machines on the planet. Today, people build catapults for fun: Scout troops, historical reenactors, fathers and daughters, beer-stoked college students. Having built more […]
Berto’s Amphi-Cycle
This is a low-tech project, so no welding or big machinery is needed. Everyone can use his or her own bicycle and make it amphibious. The conversion time from land to water is not more than 7 minutes; the same for the opposite direction. The design is usable for any bicycle and the construction is […]
Simple Van de Graaff Generator
When I was younger, I spent hours perusing Bill Beaty’s electrostatics web pages. At the time, I didn’t achieve any real successes trying to build his high-voltage contraptions, and so my interest waned. Years later, I saw someone online use a soda can as a collector for their Van de Graaff generator, and all my […]
PVC Plant Holder
This versatile and attractive plant holder holds a standard 4″ flowerpot in a variety of ways.
PVC Floating Accent Light
This lamp adds a romantic glow to any room. Designed to provide good airflow around the bulb, it seems to float magically on a soft ring of light around its base.
