When is a solid not a solid?

[chrisb]

- reduce the constraints as much as possible;
- prefer geometric constraints to dimensional ones.

While I'm fully with you concerning the second advice, I'm not so sure about the first: For a given set of geometric elements you have a fixed number of degrees of freedom, which have to be consumed by constraints. Minimizing this number can only be achieved by using constraints consuming more than one degree of freedom, and I agree that you should e.g. prefer point-to-point orthogonality over coincidence plus line-line-orthogonality. But further reduction is only possible by reducing the number of geometric elements.

[domad]

...........

Hi chrisb, Good morning to the Community!

.... as often happens, unfortunately the translations do not always hit the "target", perhaps it was better to write "for what
possible" and "simplify" instead of "reducing".

[chrisb]

Hi domad, I'm sure we are heading for the same: good sketches. And that means it is not only worth, but almost a must, to really think about how to constrain it.