Catapult: Trebuchet Treachery -Day 3

19 05 2008

Day three has arrived on working on this project. Now it was time to build the machine!

First we started on our base which would look like a rectangle with a piece of wood going in the middle like this: [|]. So, using a power drill, we made holes to where we would put our screws in. Once that was done, we went ahead and put in our screws. There was only one problem when we were putting the screws in, the wood began to split open! Obviously, the screw was way too thick for the wood which made us drown in misery. So we stopped using the thick screws and went scrounging around my shed to find thinner nails. After half an hour wasted in digging for random screws, we finally found a few. At that point, we just felt lucky. So we continued in screwing in the base which turned out pretty sturdy.

Now it was time to make our verticals which looked something and upside down Y. Since the blocks were rectangular, we had to cut some wood off to make it level with the board and ground to make it triangular. This only took a few minutes but during the process, I almost sawed off one of my friends finger since the wood jerked. Without doubt he got furious and started scorning me. With the cuts made, nailing the pieces in went quick and simple.

So with all the verticals put together with the base, it was time to drills some holes to fit a bar in between the verticals which would be our axis of rotation for the arm. This proved difficult. With a limit to our tools, our drills didn’t make big enough holes. So instead, we drilled multiple holes to make the circle bigger. This took the most time of all as we spend about two hours trying to make the perfect hole for the bar. It was successful, but nevertheless was painstakingly long.

It was almost 8:30 P.M. so we decided to call it a day. Next step, make the arm and sling!