This catapult is very powerful....when i tested it, it went over 10 ft......my friends made another and they got it to go over 30 ft......it is so easy that it can be made in less than 5 minutes if you know what you're doing.
Step 1: Stuff You Need
what you need
-1 binder clip
-2 rubber bands
-1 pen tube
Step 2: So Easy
wrap tape around one of the metal pieces a couple of times
Step 3: What to Do With the Pen
cut the pen tube a little longer than the binder clip........place it across in between the metal piece and the part in the middle
Step 4: Almost Done
wrap the rubber bands around the binder clip
Step 5: You Are Now Done!!!
the final product