During my customer visits I've more and more found out that, in the country where I live, companies are relying mainly on "cordinate" dimensioning and just plus/minus tolerancing.

If you dimension a part with DimXpert by using plus/minus tolerances and show tolerance status it will show the part as undefined.

Take the example of this shaft: these are used datums:

And this is the tolerance status when using Plus/Minus dimensioning scheme:

Cylindrical surfaces are undefined.

This is not a fault in the software, it is correct, because there no tolerances to define form, location, and orientation of the surfaces.

When using GD&T dimensioning scheme the shaft is completely defined:

When a designer uses DimXpert the software will take care of all the hard work of completely defining the part and check consistency of dimensioning respect to GD&T rules.

This will ease desginers' life.

A more detailed explanation of why GD&T is better than coordinate dimensioning is here:

So we should push more the importance of using GD&T.

Alex