I am not exactly sure where to put this, but I used a pair of calipers and CADed up a R1 keycap. I found it way to hard to find this information online, so hopefully this will help someone who is looking for this information.
Some things like the supports I modified the thickness for 3D printing. If you are looking for the CAD and use Solidworks, I might be able to hook you up. Just PM me.