For those of you using Sketchup I have made my Glowforge reference model public in the 3D Warehouse.
The outer dimensions (length, width, height) are accurate to the specifications provided on glowforge.com, however the rounded corners and inner details are there for aesthetic purposes only.
https://3dwarehouse.sketchup.com/model.html?id=ua8aabc5f-4d8a-49c3-b203-846a1d8cf408
Happy workshop planning!