The Jolt egg timer detonator is pyrotechnic detonator that will give you a Jolt of fun. It is a very eggciting project that will make you egg cream your pants.
Bad puns aside though, the egg timer detonator is a great project for many reasons:
Its cheap: The materials will cost somewhere between 0 and 20 dollars.
Its simple: I designed it so that almost any analog egg timer should work, and construction should take less then an hour.
Its useful: Ever need a 0-60 minute delay on a pyrotechnic mixture. I didn't think so.
TSA Agent #1- "Hey why does that can of soda have an egg timer on top of it?"
TSA Agent #2- "So people know how long it will stay carbonated after opening ... duh."
TSA Agent #1- "Then why is it duct taped to the wing of that plane?"
TSA Agent #2- "Haven't you ever seen the Twilight Zone. Messing with William Shatner is thirsty business."
TSA Agent #1- "Ohh, interesting. Hey, is that little old lady over there clipping her nails?"
TSA Agent #2- "It would appear as though you are right." ::whips out shotgun:: "DIE TERRORIST SCUM!!!"
Just in case you need more convincing though, here is a video.
Step 1: Materials
Metal can - I used a Jolt can because I liked the design. Any metal can about the same diameter of the egg timer should work.
Egg timer - The only requirement for the egg timer is that it is set by rotating. One part should stay stationary as the other part is rotated to set the time.
Syringe Tips - Can be found in ink cartridge refill kits.
Wire - Cheap speaker wire from radio shack works fine.
Capacitor Charger - Oh Snap! I just slightly validated that project.