Inventor does not scale an assembly the way it scales a part. An assembly is a set of components with their own dimensions and constraints, so there is no single factor that can be applied to the whole thing without breaking those relations.
The practical routes are two. Scale each part individually, which keeps the assembly valid because the constraints are rebuilt on the new geometry, or derive the assembly into a new part, where a scale factor can be applied to the result as a single body.
The derived route is the fastest when you only need the scaled shape, for example to build a fluid domain around it. The part by part route is the one to take when the assembly has to remain editable as an assembly.
In this tutorial we will learn how to use Scale tool in Autodesk Inventor.
Autodesk Inventor – Change Units
In this tutorial we will learn how to change units in Autodesk Inventor.
Autodesk Inventor – Coil tool / Endless Screw
In this tutorial we will learn how to create a simple geometry using Autodesk Inventor.
Tutorial: Loft using Autodesk Inventor.
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Autodesk Inventor – Import points from Excel
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