Back in the days when I was in the design industry, we made some pretty tight tolerance parts.
Most of the time when people model up parts in 3D they do it in a nominal dimension form.
This is not a bad way to work at all, but you can model using the manufacturing tolerances right in the sketches of your parts.
By doing this you can validate your parts based on the different material conditions of the part.
Enjoy,
Jim.............Another INCAT CAD Geek
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