We normally prototype with things in the KOP. Last year when prototyping the shooter, the only tools that we used were a vertical band saw and a hand drill. We have also used some TETRIX and VEX parts to prototype because they are easy to put together and have a variety of different pats and pieces. Remember, prototypes do not need to be exact, they are just rough estimates on what you guys are going to make. Also, try to make your prototypes as "open source" as possible. What I mean by this is make it so you can easily adjust some factors to find what is the optimal configuration.
If it is your first year, I would recommend you to buy some VEX or TETRIX parts. It is worth it and will be a big help for the success of your robot.
