Help with adding a desity to a material

I’m new to rhino and have a metal fabrication shop. how can I add a density to a material to get the weight of it. example

I model a cube. I can drag aluminum to the solid. can rhino give me the weight?
getmassprops command says has no mass. I believe I need to add a density to the material???

another example would be to build a dinner plate. If I make the plate out of aluminum, it would have a weight
if I made it out of stainless steel it would have a different weight. how can I create a solid and give it a mass?

This feature is not available in default rhino, but I think there are plugins with such functionality.

Otherwise just multiply the volume (from Volume command) by the density manually.

Maybe the following plugin helps
https://wiki.mcneel.com/people/peterharris

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