Thanks Chris,
That's very interesting. I found a slightly more detailed article off the back of your link:
http://www.wired.com/2012/09/synthesizer-lets-you-3-d-print-your-own-parts/
So basically you need the CAD file and you're good to go? Does anyone have any experience of drawing these?
Also does anyone know what the costs are for getting something like this manufactured? I need 8 MTM knobs and I'm wondering if its worth pursuing.
Cheers
Chris