You can add the following onto a solid:
You can use Boolean addition on:
To add objects to a solid:
If there is a visible active solid, this is automatically used as the Primary selection. If you pre-select an inactive solid while the active solid is hidden, the inactive solid is used as the Primary selection.
If necessary, click Swap Objects to reverse the Primary and Secondary selection objects.
An Add feature icon representing the operation appears in the solid feature Tree Window.
If the added solid has features, they are added as a sub-tree next to the Add feature icon.
Below is an example of two intersecting solids, displayed as shaded and as wireframe :
In this example, the following solid is created:
The shaded view looks identical to the original, but in the wireframe view you can see the two separate solids have been merged into one solid.