Good deal Justen. I've never seen the videos but hear they are great. A trebuchet, why didn't I think of that! One of our boys while in the 6th grade had a teacher that was very hands on from a science perspective. He broke the class into pairs and each pair had to build a trebuchet that would toss a tennis ball. Farthest toss would win tickets to the movies. They came in third. What a great project. Their next one, was to build a machine that would lick a stamp and put it on an envelope. This one they won. They used a Hot Wheels car coming down the track going by a sponge and then passing an envelope just at the right second the car ran into a block of wood. It worked. Good teacher.
Glad to help. In our western world most of the time even a dyed edge is frowned upon on leather work. Here are a couple of Nichole's saddles when they were new:
And the one I'm currently riding, when it was new, (I have another one on order, it will get started on in April):
Point is these guys know a little bout dead cow. No EdgeKote or even dyed edges in sight. Just rubbed edges.