Change sketch dimensions in Drafting

NX methodology normally suggests that your drafting, toolpaths, CAE model etc all depend on your 3D model, so the changes should propogate from 3D model to the rest. (thus the name master and non-master parts)

What it means, is that if you change a drafting dimension of a line from 50 to 55 mm in drafting , you'll only get a warning that the associativity between the dimension and the geometry will be lost, and your line length will remain unchanged.

Normally this really is not a problem in NX, as switching between applications like modeling and drafting is quite easy. But if you are switching to NX from another CAD application, you might want to try this approach :

• set UGII_DRAFT_EXPRESSIONS_OK = 1
• create a sketch
• create a view of the model in drafting
• select Insert -> Feature Parameters command, and place the sketch dimensions into your view
• Hit CTRL + E (expressions) and select a dimension of the sketch. You'll be able to modify and update without having to go back to modeling.