Here's some few pictures of my first little trebuchet.
It is made of a piece of wood, a tea spoon, tape, some thin ropes, and rubber bands.
My room is highest up in the house, so I have to climb up a some nasty stairs to get up. Where the stairs come up, there is a hole in the floor, and a dropside.
Ok, to the point, on the opposite side of where you come up when climbing up the stairs, I built a little trebuchet, to shoot nuts on people (moms etc).
Its main use now it to keep the key to my room while I'm away, so that when I come home, I can pull in a rope, and the key comes flying to me.
On the top of the wood piece I put two nails, which I tied some ropes from, and the other end of the ropes I tied in four nails in the floor. I've used the Curwen-knot on those ropes to be able to make it as tight as posible.
First I put two nails in cross on the floor, and tied a small thread with a loop on the other end to the two nails. I layed a nail under the two nails in cross, and took the thread over the rea spoon, and the loop around the other end of the nail I layed under the nails in cross. The pictures will explain better than me!
The rope you can see from the nail under the cross-nails, goes to the other side of the hole in the floor.
Doesn't it look cool?
Gard