More trebuchet workingness

As the second quarter began, we also began by working on our sling. What we did was took some tarp and folded it over a couple of times, duct taping the edges together. After that, we placed cardboard in a manner that would make the sling stiffer, making it more able to support the projectile. We left the center of the sling free of cardboard to keep the projectile in place until release. After all of the cardboard was neatly duct taped into place, we folded the tarp in half once more and used our favorite adhesive to keep the two ends closed. Currently, we are working on putting wheels on the bottom and going mobile!