Google Sketchup is a cheesy little CAD application that was initially intended to create building models for Google Earth. It is not extremely powerful, but it’s more intuitive and easy to use than most CAD programs.
It can allow you to rotate the plans to examine how parts go together. I am considering including model of each our plans to all members. Would this be helpful to anyone?
You can grab a FREE copy of Google Sketchup 7.0 at: http://sketchup.google.com