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Missing volume property in drawing

Urs_Egger_OptrelUrs_Egger_Optrel Member Posts: 7 PRO

I prepared a title block where I want to display the wheight and volume of the plastic part (that's kind of a standard for many manufacturers).
While everything works fine with the weight. The field is not populated with the volume value. I wonder how the weight is calculated when the system doesn't know the volume. 
Measuring the volume shows value. But no value on drawing possible.

can anyone help please?
thank you



  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 4,802
    Volume is not a standard property so I guess you added it? Volume needs to be calculated using a "computed part property" - see video half way down this page: https://forum.onshape.com/discussion/17425/improvements-to-onshape-january-12th-2022/p1 
    Director, Technical Services, EMEA 
  • Urs_Egger_OptrelUrs_Egger_Optrel Member Posts: 7 PRO
    Hello Neil, 
    Thanks for your feedback. You got the point. "volume" is not a standard property while "mass" is a standard property. However the formula mass = volume*density requires the volume. So onshape knows the volume already to calculate the mass. The only thing I want is to access the volume information onshape already has somewhere. This should be standard and not feature script. 
  • S1monS1mon Member Posts: 1,711 PRO
    I agree this should be built in. I went through the steps to add this to our Enterprise. It’s not too hard, but it’s a pain. 

    BOMs that have this property shown are slower. When you click on mass properties for a part, it doesn’t seem to take long, but when you need volume for a whole assembly the time adds up. 

    It seems like it would be better if volumes could be calculated in the background and cached.
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