Boolean Modifier Help - Difference - Surface Remaining I'm very new to Blender but I'm trying to create a simple facemask.
I am using a Head Mesh (using FaceBuilder add-on) and a simple hallow cylinder to create the profile of the mask that will sit against the face.
I have intersected the cylinder with the face and have used the Boolean Modifier with the Difference Operation to create a cut in the cylinder using the Face mesh.
The problem that I am having is that the front of the face is remaining after doing the Boolean Modifier.
Is there any way of removing this? Maybe I am misunderstanding/misusing the Boolean Modifier.
That should work using 2.91 version of Blender with &quot;Exact&quot; option for the boolean:

&quot;Fast&quot; option behaves as the boolean of the previous version.