Step 1: Materials
-wire clothes hanger
-an electric (preferably cordless) drill
-the proper drill bit for your screws
-a small block of wood (I used a 10.5x3.5 inch block.) This is mainly to mount the catapult on, and anchor it down.
-needle nose pliers (with a wire cutter).
Step 2: Preparing your materials
Next, on the clothes hanger, you want a piece of the wire to be about 1 foot, so cut on the two tagged spots.
Step 3: Drilling!
Step 4: Extending the arm (lever extension) and adding the lever holder.
The tag on the nail has its instructions.