peteroznewman
Subscriber

The Purple Icon with the three side of a cube are surfaces.


The Green Icon of a cube is a solid. You only have one solid, which is highlighted in orange.



If you sketch a set of curves that form a closed loop and click the pull tool, the curves will become a surface and you will pull that surface into a solid.


If you sketch a set of curves that do not form a closed loop and click the pull tool, you will pull surfaces from the curves and have no solid.


If you hide the solid, and go to the Repair tab, you can put in the missing faces to Solidify the surfaces you have.




Now you can use the Pull tool to pull the face that should be a hole through the part and make a hole. Note that you have to click Cut in the Options when you pull that face.




 If you want to merge the original solid, make it visible again and use the Combine tool to Add one solid to the other.