GregValiant 1,454
You can kind of do it.
Right now your cutting mesh is leaving it's own cavity and since the main model has "walls" the new cavity is getting walls.
Your cavities in the main model are too deep. They should be just deep enough to sink the speaker mounting flange.
Behind those your "cutting model" must be configured as an Infill Mesh and not a Cutting Mesh. 0 walls, 0 top, 0 btm, 0 infill.
In Mesh Fixes turn on "Remove Mesh Intersection"
After printing you will need to use a hole saw and cut the holes in the shell (Your model can have printed pilot holes as drill guides). The inside of the shell will be as you want it. No infill where the rest of the speaker fits. That interior baffle - I suppose that would need to be a separate mesh.
This is my model to demonstrate. You can see the gap in the infill from the cutting tool. With the face of the pocket cut away the speaker gap will be revealed. The round shadow under the sphere is a flat feature 1mm thick that I sink into the Cura build plate. I put them on both models so I can precisely locate them in Cura.
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DeepSOIC 0
here's what i want, conceptually (it's a different model that i slic3d and printed long ago)
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