This is a model of an NaCl Ionic Lattice in the scale 1: 10-9. Two sections are integrated into the model for a cubic face-centered unit cell. In the new version 2 (update june 2023) of the lattice the spheres overlap, are more rounded and cut off at the bottom. This model and other educational examples can be found on the Erasmus + project website: make in class: www.makeinclass.eu or the website of the Gymnasium Neubiberg www.gymnasium-neubiberg.de This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/cqO0ah9UH2k