If you want to scale the whole model or assembly for any reason like making small prototypes etc., Proe/ Creo has got a handy function for that. There is a difference in scaling the models and assemblies. Let’s look into that.
In Pro E versions: Go to Edit → Scale model from the Main menu at the top.
In Creo versions: Go to Model tab and in the Operations group, expand the arrow and select Scale model.
When you select this, you will get a text input box. Input the scale you want and then press enter. A regeneration confirmation window will appear now. Select ok. That's it the model is scaled to the input value.
The first coordinate system in the model will be used as the base point for scaling. See below for input format and examples.
Enlargement scale: (5:1 for example)
Scale down: (1:4 for example)
Use of semicolon will not work here i.e 5:1, 10:20 etc.
Note: If you have any relations that control the dimensions, you may sometimes cannot scale the model if it conflicts with the relation. You will have to modify the relation then. Also make sure that scaling the model will not affect other parts/ assembly which is using this part.
Open the assembly and follow the same instructions given above. But only the assembly dimensions will be scaled here relative to the assembly reference of the part. There will not be any change in the individual part’s dimensions. Constraints like mate, align, insert etc. will remain as it is. See below for examples.