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Boolean Unite: Error in Message Manager; Objects Disappear/Vanish

- January 4, 2025 at 6:55 pm
  
  schectma
  Subscriber
  
  Please see attached screenshots and advise.
  Upon executing the Unite command on all (solid, watertight) objects shown, they disappear and an error is logged to the Message Manager: "Body could not be created for part because of invalid parameters to Unite operation." Version is 2024 R2. Coil object is an imported .stl, while other two [polygonal solids] are native Maxwell 3D geometry.
  Very few similar threads exist on this forum:
  innovationspace.ansys.com/forum?s=Body could not be created for part because of invalid parameters to Unite operation.
  fail to perform unite boolean opeation and create enclosure using imported SolidWorks CAD Model
  Hexagonal polyhedron unite error
  Hoping someone here can help. Thanks.
- January 13, 2025 at 12:47 pm
  
  NA
  Ansys Employee
  
  Dear schectma,
  The cause of this error is due to the fact that you are trying to unite objects of different material. As I can see from your first screenshot, two objects are vacuum and one is not assigned a material. In order for the boolean function "unite" to work, all of the objects need to have the same material.
  I hope this helps!

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