Edwin Wise

Boom Stick: The High Powered PVC Air Cannon

11/20/2015

A boom stick is the perfect jump scare delivery system.

Build a Simple Vortex Cannon, Then Upgrade with a Subwoofer

11/19/2015

Learn about the physics of air movement with a vortex cannon that blows smoke rings when you thump it.

Hot Glue Web Gun

10/22/2014

Make a spider web shooter that’ll surely spread the creeps.

Flying Crank Ghost

10/16/2013

This classic animatronic prop is "de rigueur" for any serious haunter.

Chladni Plate

12/18/2012

Use a broken speaker, bits of wire, and tape to prepare a coneless voice coil driver, then use it to...

Solar Joule Bracelet

12/18/2012

Solar-cell links are cleverly boosted to drive an LED jewel.

1+2+3: Ping Ponger

10/26/2010

Almost half of a rubber racquetball is used as a disc spring that's bistable to propel a ping-pong ball from...