About this 3D model

Use these when teaching the young 'uns about various trends among the elements! The higher the box, the bigger the relative value (biggest = 3 cm high). OOPS! Density was incorrect -- fixed now, at least the individual STL download is fixed -- the ZIP version of density still looks like it must be melting point, and I'm too lazy and have too slow of a connection to fix it! Sorry for the inconvenience!