Hello and Good whatever it is. This is a Pencil or anything that is pencil sized catapult this is how to make it:
2 Coat Hanger the metal ones
2 2" or 3" spring with loops on the end
Step 1: Cut
Okay now that you have got the requided prts lets start!
Take coat hagner 1 and cut out the longest peice do the same for coat hanger 2
Then bend them as follows:
The little funny v like things on the top view are there to help the spring stay put
Bend them the same for both hangers.
They must look the same.
Step 2: Springs
Now take your springs and slip them over the hooks of both "hangers"
Make sure that 1 set of hooks are up and the others down
Tape the springs in place so that they don't slip around the "hanger"
It should look like the last picture
Step 3: Find
Okay now find a sutible place to lanch and hook one of the hooks over a table or somthing that won't move to much
Tape it onto the thing
Place a pencil into the upright facing hooks pull back with 1 or 2 fingers (if you do it with 2 make sure u let go at the same time)
Watch the Vid and you will see how to shoot it: