All the paper/card models I found of the original Mac are not exactly accurate. Ok. Fine. They're crap. So I surfed for a couple of hours last night for dimensions, a 3d model, ANYTHING. I did find out that iFixit.com did a teardown of a Mac 128k for the 30th anniversary. So throwing sanity to the wind I emailed the iFixit customer service and promptly forgot about it.
I got a response five minutes later. No, really. Five minutes.
CONGRATULATIONS!!! That is COOL!!!
I am rather surprised as well that they got back to you so fast and was willing to give you the dimensions for such.
If you are thinking about designing the model, got for it!!! I am looking forward to seeing it!!!
The iFixit guys added the mouse and keyboard to the Mac chassis page. Steve, of Steve's Paper, has graciously agreed to do the 3d modeling and flattening for me since I have -999 experience level in those areas.
I finally figured out how to get Pepakura to make a specific part side to be the front/top. Since there were parts I had to "flip" on the interior and exterior PDFs I decided to redo all the PDFs. While I was at it I consolidated some files.