Propose a support-free hollowing framework to overcome the difficulty of fabricating voids inside a solid.
By such a surface-to-solid conversion operation, industrial users are able to fabricate a surface by 3D printing.
Volume support thickening for 3D printing.
Mark the surfaces on the part that you would like to remove; the remaining part will be hollowed out.
When you 3D printing something and you want to save material,the first way comes to your mind is hollowing your model.