A set of clamps to hold a tablet with a kneeboard strap. The design is an adaptation of a clamp designed by Kevintjuh as posted on Thingiverse. I redesigned the clamp from scratch, so only used the dimensions of the original design as a starting point. The attached Blender file contains a parametric version that allows to change the thickness of the tablet and the width of the elastic strap.
Print the clamp as contained in the Blender file, with Z-direction up. I used a support enforcer to support the large bridge for the elastic strap (see attached image).
The author hasn't provided the model origin yet.