Homemade Pencil Launcher

The pencil launcher is similar to a slingshot and uses similar properties. It has a ~9"x1" cylinder where you can put anything inside to launch.

- 8" long 1 5/16" diameter PVC pipe

- 10" long 1" diameter PVC pipe - 3 10" elastic cords

- 6" string

- 1"x1" flat piece of plastic

- 3-5 10" elastic cords

Tools:

- Drill + 1/4" drill bit

- Hot glue + hot glue gun

On one side, drill 2 holes 1/2" away from the edge

Cut the plastic piece into a circle so it can tightly fit inside the 1" PVC pipe.

Hot glue the plastic piece in a way that does not block the 2 holes, as shown in the 2nd image.

Stick the string through the holes and tie it.

Evenly space the elastic cords around the rim of the 1 5/16" pipe

Make sure to use a generous amount when gluing it together so it is able to withstand the impact of the 2nd PVC pipe.

Stick the smaller pipe into the larger pipe non-drilled side first. Then hook the pipe together as shown.

(Optional) Hot glue the smaller pipe to the hooks the same way as shown in step 6.

Then you are finished!