Is it possibly to add a mass/weight value to a model?
We use a lot of 3rd party products, that I download from company sites(where available), in assemblies.
Sometime I even just build a block to represent an item. The looks and materials are not important but the weight is as most times I have to keep the whole assembly within a specified weight. On 2 occasions I also needed the centre of gravity to show a client his ideas were not ideal.