JT, We just started using sheet metal last season. We have a laser cutter sponsor so it's easier for us than it will be with you and the mill (remember to fillet your corners to the size of your end mills).
Here is the presentation I put together for the team last season when we decided to start doing this. It's definitely not complete and I was learning at the same time so I don't make any promises that is all correct but it will get you started.
https://www.dropbox.com/s/63ke4hzitw...t%20Metal.pptx
I would also recommend looking at the CAD files and robots from teams that do sheet metal well, 33, 148, 228, 1114, etc.
My favorite is still
148's 2011 Robot Raptor. I have a whole presentation that I go over with the team that is just on this robot.
Here is an interesting read on doing different types of 2D manufacturing (sheet metal, CNC routing, etc) for building things .
http://www.instructables.com/id/How-...y-Really-Fast/.
Also go back through and read the threads on other people's designs. Some really smart people, give really helpful advice. Here are a few of the recent threads.
1114 Inspired Chasssis, 488 Fall Project
1 and
2,
Sheet Metal Drivetrain Prototype and there are many more like it.