From wooden dowels and rubber bands.
Project tiny specimens onto the walls of your own home.
Hey hey. Ho ho.
You should check your local laws and regulations before firing off your own
In honor of Pi Day, why don't you try one of these fun crafts from the Popular Science archives? Use a pie tin to make a jet engine, a telescope, or a lovely chandelier.
In honor of National Pie Day, why don't you try one of these fun crafts from the Popular Science archives? Use a pie tin to make a jet engine, a telescope, or a lovely chandelier.
How our readers turned hairpins into resistance units, electric fans into potato slicers, and asbestos shingles into hotplates.
Combining salvaged parts and an unusual light source, a DIY slide projector beams strange, mesmerizing images from hundreds of feet away
PopSci teaches you how to make a crossbow, a wooden scooter, a psychedelic light show, and more contraptions you didn't know you needed
Turn a regular flashlight into a powerful LED torch that will run for years
Give your cybernetic “toaster” a new set of eyes
Including a backyard trampoline, a playhouse built from window blinds, a flying saucer that doubles as a water ski, and more
Attach a tiny signaling device to things you often misplace, and you'll be able to recover them in a snap
Build a device that lets you charge batteries for your cellphone or music player just by taking a stroll
Reportedly, the wooden copter can soar up to 2,600 feet, but the Chinese government has grounded it for safety reasons
It's cheaper and sturdier than the store-bought kind
Build your own Arduino demo board
A tiny version of one of history's most powerful trebuchets
Get outside this weekend.
Add a camera to your scope for cheap astrophotography
Give your desk a little retro-tech vibe while cleaning out the old office junk drawer
PopSci explores the geodesic dome's brief wave of popularity