Edit (10/2/2026): Added a parametric f3d file so anyone can adjust the different depths to their liking. There are 3 parameters: ProfL (for adjusting the biggest gap) ProfM (for the middle gap) and ProfS 8for the smallest gap). Really important that ProfL is allays the biggest gap.
I used ABS with 5 perimeters and 25% grid infill, feels strong and it didn't fail for now.