Ha! I’ve only had the use of one hand for 12 weeks (OK, I’ll occasionally use my left index finger on the shift key) and won’t be released to take the sling off other than to exercise (minimal) or shower for another 2+ weeks at least, so all of my design is in my head. My designs typically start as thought experiments, then rough drawings that get mocked up, refined and used to develop Bills of Materials. Then I start actually cutting, making as-built mark-ups as I go (and taking loads of photos abd sometimes videos. The “final” product may get a couple of revisions (more photos/video) and then the drawings are updated as final.
Probably next week I’ll post an update with a probable timeline, along with the “After Shoulder” list: it’s going to be a busy Summer!