One of the things that Auto Dimensioning does for you, which some people have discovered and are leveraging, is that it always offers the user at least one solution to fully constrain your sketch no matter where you are in your current sketch workflow.
With that in mind, the way I've come to use it is that, first, it's OFF by default, but if I'm creating a complex sketch and after I've added all of my desired constraints and dimensions, particularly those that I consider the 'design intent', and there are still some degrees of freedom left and it's not obvious how one would finish the model or else it's not really critical how it's done just that you'd like it to be fully constrained, I THEN toggle on Auto Dimensions to quickly see what at least one solution is going to be. I can either use those new constraints by simply double-clicking them and accepting the values or I can use them as hints as to how I might go about finishing the task myself.
Anyway, that's one approach which I've found productive and which takes advantage of the strengths of Auto Dimensioning without it becoming a bit intrusive when it's really not needed or at least when it wouldn't be appreciated.
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
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