YOU DID IT ! just DON'T post rude comments. Dont pull it too hard. pull it untill you feel it is at full power.
This Instructable is is probably is the first knex slingshot on this website. I'm sorry I haven't posted anything in a long time.By the way, my friend and I are going to be sharing an account or making our own team. This slingshot is very cool, and can shoot pretty far.