This weekend was to mark the end of the modeling stage of the insert, but some persistent issues I was having, particularly with the fourth insert, led me to discover that they were not going to open/work in other versions of Blender that weren't 2.92 alpha.
Admittedly disappointed, I do also see the bright side: starting again in a more stable version is also an opportunity to improve on the designs. This type of thing has been happening a lot this year and I have to believe it's working in my favour - making a better product.
2020 continues to strip some and distill other qualities, and it's mostly been to my benefit.
Persistence and Patience have become the name of this game.
With that I move to working on HEXES Vol 1.1