Exactly the same outline as the original work, but with the hole for the thumb implemented in openSCAD (instead of in the eps) for better adjustabilty. I hear you br3ttb ;)
To adjust to thumb or book size:
- download .scad and .dxf files
- adjust parameters to fit
- export as stl, slice and print
- read singlehandedly ;)
The stl attached equals the original in size and shape (don't know about thickness though).
I used two perimeters and 5% infill (honeycomb) and it is quite sturdy.