Building An Acrylic Turntable

Hey Folks,
While I'm slowly upgrading my Thorens, I've been cogitating over the idea of making my own acrylic platter and plinth. Having been exposed to the Industrial Design department in college, I have the courage to go through with it but I'm lacking knowledge with respect to turntable mechanics. Are separate motors and power supplies available on the commercial market or otherwise? What would you recommend with respect to design, weight, mechanics, etc... In other words, what would you do to a turntable if you were making it yourself or if you were having someone else make it according to your personal specifications? As soon as I get a clearer understanding, then I can begin on the preliminary drawings.
Thanks!