Slingshot

Step 4: Tie it up

Finally, put the cradle on the Y and we are almost done. Get the small rubber bands and loop them under the big ones and twist them both around the top. Sorry if that is confusing but it's hard to explain. Look at the (blurry, sorry) picture for some help. All this does is keep the big rubber bands and shot cradle from flying off, so there are many ways of doing this.