Technical Tips & Techniques

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Determine the Volume of an Oddly Shaped Cavity

Have you ever needed to determine the volume of an oddly shaped cavity?  Wouldn't it be nice to be able to do so easily?  Here's how to go about determining the capacity of any cavity you can think up. 

Step by step instructions listed below video & eDrawings links

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Determine the Volume of an Oddly Shapped Cavity

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Click here to download the SW model & drawing files

The basic steps to accomplish the above:

1.  Open the drawing of the 3D model you wish to show the volume of.
2.  Open your 3D part model.
3.  Create a custom property called "volume" & link it to the 3D model's volume by
     clicking  FILE -- PROPERTIES.
4.  Create a derived configuration (This will be the configuration that shows the
     volume of the cavity & be linked to the parent configuration)
5.  Extrude a cube around your part model (make sure it will always be larger than
     the object)
     -- Make sure to uncheck "merge results' when extruding the cube
     -- Also make sure the cube is coincident to all of the openings of your 3D part
     model.
6.  Now use the "combine" command & subtract your 3D part from the cube.
7.  You should now be left with a model representing the volume of the cavity.
8.  Now unlink & suppress the last few features in your feature tree from the by right
     clicking on them & going to "feature properties".
9.  Go back to your parent configuration & suppress the last few features -- you
     should now see your original 3D model.
10. Go back to your derived configuration & un-suppress the last few features -- you
     should now see the volume of the cavity.
11. Go back to your 2D drawings.
12. Copy one of your views.
13. Change the configuration of that view to show the derived configuration (volume
     of cavity)
14. Now create a not inside that view & click LINK TO PROPERTIES & link to the
     volume of the cavity.
15. You can move this view off the page if you do not want it to print -- but, move
     the volume not back onto the drawing. . .
16. Now when you change the 3D model you will notice the volume note
     automatically update!!

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