Need to create a new material and change the density so when I evaluate the block the weight is correct.
You have to create a new material so you can edit and change the mass density
Another way to accomplish this is to override the mass value in Mass Properties, located in Evaluate tab.
Here is some reading material if you decide to create a new material:
How to Change Material in SOLIDWORKS: Basic and Advanced
How to Add SOLIDWORKS Material Properties
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