Hi @Anonymous
The objects consist of self-intersecting lines that's why you are not able to extrude it. Try to explode all the elements and remove the self-intersecting lines and then join them. After that use the command "PRESSPULL" to create solid objects instead of "EXTRUDE" command 🙂
See attachment.
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ವಿನೋದ್ ಕೆ ಎಲ್( System Design Engineer)
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