I have completed and uploaded my first finished model to Makerworld. I’m very excited, though it was so simple.
After working so hard to get Shapr3D sorted out, I started a trial of Fusion 360 and, well, it just made more sense. I realize that everyone told me that and I read about it and blah blah blah, but against my wishes it was true.
So the model itself is pretty simple. Based on the appearance of a different design, I created it from scratch in Fusion. My main changes (really) were rounding off the corners, replacing a weak screw together design with posts. The design is intended to be modular: You have one ‘top’ piece with side caps for the monitor and as many as 2-6 extension blocks to raise the monitor up a variable height. Overall the design seems stable and looks nice.

