Magnetic Separation Stand by NonDisjunction

Estimate pi using conductive paint by dwinst

Emergency Battery in the Wilderness by merijnvw

This Seismometer is no toy! by barkergk

Vacuum Cannon drives ping pong ball at supersonic speed by Bill WW

How to create a Science Hack Day by arielwaldman

How to grow great crystals by andreyeurope

Make Prince Rupert's Drops - Glass Turned Hand Grenade by NightHawkInLight

Detecting Cosmic Rays in a Cloud Chamber by ExperiencingPhysics

Visualizing Sound With Fluids by ExperiencingPhysics

A better vacuum chamber by Random_Canadian

Turning Back Time with Reversible Laminar Flow by ExperiencingPhysics

Chemistry Crystals! by mayday12

Ballistics Gel Step by Step Regulation Testing Density by dad_a_monk

How to make your own Metal Pulse Magnetizer by andreyeurope

How to Talk to Someone Using Ham Radio by InventorManAlways

Make a Hail-Pad without any Styrofoam or Foil! by 3ddementor

Overbalanced Wheel (Fake Perpetual Motion Machine for Fun) by mikesoniat

Tornado Machine by ixisuprflyixi

How to Convert Water into Fuel by Building a DIY Oxyhydro… by The King of Random

Wave Pendulum by SargentPepper

How to make a magnetic stirrer that doesn't cost like a p… by andreyeurope

Make Ferric Chloride (for etching printed circuit boards) by NurdRage

Building a Model Rocket - Introduction by wijoon

Mad Scientist's "Jacob's Ladder" Lightning Prop by ericdaniels

Faux Metal Tesla Turbine by brazilero2008

Focusing stand makes cheap USB microscope more useful by nnewlon

Build a Halloween Seismometer for Under $5 by bikeframe

Ghost Metal Chemistry Trick by NurdRage