Welcome to SW forums Brian
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Re: Weight in Oz (this one has an example too)
You might also find this post helpful for your future reference.
Welcome to the forum.
If you go to file>properties create a property called weight or something like that.
Then hit the down arrow in this column. Then all you have to do is link this property in your drawing and you will have
the value automatically fill in based on your material selection.
Hope this helps you. Good luck.