Earth layers model

Earth model with cutout to see inner shells. It was done for a school project with my son.

Shells diameters are slightly disproportional to make them easy printable. If we were tring to follow the real proportions, crust and lithosphere get very thin. SCAD source is included so one who wishes can play with proportions.

Outer diameter is 150mm. Stand height is 50mm.

Assembly

Print all shells but crust in different colors and glue together.

The crust can be printed as a whole, but it's easier to print four sections and glue them together.

Print the nut holder and put M5 nut inside. Then drill 5mm hole somewhere on the crust and glue the nut holder with the nut to the inner side of the crust.

Then glue the crust and all inner shells together.

Print a stand. Two versions are avalable - straight and smoothed.

Open legend.svg file in Inkscape and print the legend on a dence paper. Hide the "path" layer before printing. Two versions are available there - English an