MechBay - Design and Print Journey

What you see below is a journey from concept to final product.
It took a lot of iterations.  A lot of trial and error, but after about a day, I finally locked down a design for my MechBay.

My iterations and lessons were as follows:

1. Build a quick mock up for proof of concept
2. Build model close to the design I want.  It doesn't fit, but this was expected as the tolerance in a print is going to be slightly bigger than the CAD design.
3. Redesigned and printed another model.  This time had problem with bed adhesion.  Was using just the plain Finder surface.  So almost all parts have a slight curve.
4. Reprinted base on blue painter's tape.  It came out ok but the new side piece does not fit due to tolerances.
5. Isolated the section of the base that is dealing with the fit of the vertical piece.  Created many variations for the hole.  It took a while but I found one that perfectly fits with the tightness I wanted.
6. Redesigned the models to look a bit more symmetrical, but something was wrong again with fit.
7. Did the isolated fit tests using Blue Painter's tape AND glue stick!  Found perfect fit.
8. Updated the final model and printed what you see above using Blue Painter's tape and glue stick.