Introduction: Gee-haw Whammy Diddle
"Gee-Haw whammy diddle" is a toy that not only has this great playful name, it also is magical by how it works!
It's simplicity and the physics behind it, made me curious to the point i had to build one,
This is a quick instructable anyone can finish in 30 minutes!!!
- Wood stick
- drill (optional)
Step 1: Sticks
For this toy we need two sticks:
Main one with notches and a plane one,
I choose a stick with 1.5cm in diameter and 20cm long and for the second i cut a stick of 15cm long.
Step 2: Notches
The notches should be located at the top of the stick, about 10cm, where you should leave enough space to hold the stick, bottom line: 8cm (handle) , 10cm (notches), 2cm (blank).
With a hand saw, cut notches in 30-45 degrees as shown in the picture.
Step 3: Propeller
I used a scrap of thin wood 5cm long, marked the middle and drilled a hole.
IMPORTANT: the hole should be twice larger than the nail you are using(in diameter).
Step 4: Play!
Hold the "handle" firmly to direct the vibration to the propeller and with a second stick rub the notches.
Try controlling the direction it spins...
If you are looking for the physical explanation of how it works, you can visit here
Runner Up in the
1 Hour Challenge