Thanks, Stan. Hmm ... "not in the public domain, but made freely available" - sounds something like one of the "Creative Commons" licenses, which retains the copyright but makes it freely available with attribution.
What say ye all - shall we tackle #5 as a group FreeCAD project? And how should we go about it? Here's an initial thought - not at all sure this is the best way to do it - just to get the ideas flowing:
1) Agree on the order of developing the parts (e.g., first the cylinder, then the piston, then ...)
2) Agree on a schedule, e.g., one week per part
3) Each person who wants to participate can work on modelling the part for the first half of the week; then in the second half of the week, everyone shares their approach / ideas.
Again, I am not at all sure that the above is a good approach or reasonable time frame or anything else; hopefully, though, it moves us closer to figuring out how to proceed.
This sounds like I might even get to learn FreeCAD.
One big issue is that this is the time of year when I'm totally swamped - - - - its time for construction and gardening.
Its about like a need for a few clones to get everything done before snow flies!!
I even am just setting up a new system with updated gpu so my system should be less of a hindrance.
I might just have to follow along because of these present time demands.
(Maybe stretch the schedule a bit? 2 weeks a part instead of one - - - dunno what would help - - - just have found FreeCAD to be a monster to understand!)