CAD Drawing

I have drawn up a chassis that I would like to build but I talked to a local machine shop that can cut it with a CNC but after 4hrs messing around in AutoCAD I failed to get anything done. I know some of you fellow RCers are adept at CAD design and was wondering if anyone could draw it in CAD for me?
It's a chassis for my MLST that will lengthen it and turn it into more of a mini muggy. I plan on making it out of 3mm 7075 Al.
Thanks, Jordan