One of the things I need most is a saw. I also need tweezers and a thing plastic case. We'll head over to Hobby Lobby in a minute and pick these up. I also need more wood and possibly some dry pigments for painting as the water color was not strong enough.
I found a great site for a company that makes trestle kits and jigs called Black Bear. You should check out their site. About everything you need to know is there. Here is what they recommend for pile trestle timber:
Hey! They even have a trestle building clinic on line!
Another great pile bent trestle photo