I primarily use Blender for modeling 3D objects for use with a 3D printer. Most of my previous experience has been with simpler geometric models (like simple robots and the like) and I have recently started trying to make more organic objects. As part of the process I use boolean modifiers to reduce the amount of non-manifold geometry before printing. However, I've noticed that I get an issue where the meshes appear to be complete in solid view but not in wireframe view.
I'm not really sure where these holes come from, but they primarily seem to show up through the use of the Boolean modifier (this mesh was normal until I used the Boolean-Difference at the bottom). Once the mesh degenerates like this, I can no longer reliably combine it with other meshes. I'm hoping that this is a simple fix, but the problem is difficult to describe, so I haven't found a solution. Any help would be appreciated! Thank you!