Hello Malcolm,
Again, I really appreciate your efforts. I carefully watched your every step. AND I learned a lot.
Definitely the First Method, using the Assembly Constraint is much faster and simpler than using the Triball. (So thank you for showing that!)
As for the Triball method: that's A LOT of steps to use the Triball for something that should really be like 3 or 4 clicks!. As I watched you go thru the steps , there were many clicks and micro-manipulations to get where you wanted to be (and I counted ~12 just to just orient the face of the hexagon, not the chamfer). As opposed to other software, where I would simply press "C" for constraint, followed by selecting the face of the part, and then the "plane" of the coordinate system, followed by "OK". (And I am not here to argue about an extra click, but the Triball method is like 3 times more work).
I really think that IronCAD has tremendous power, but sometimes the Triball idealogy gets in the way of simplicity...
I will stick with the Assembly / Positioning Constraints method you showed first.