Earth layers model

thingiverse

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 and Russian. I recommend putting a broad transparent adhesive tape over the print and the cutting the legend with exacto or paper knife. Then glue the legent to the stand bottom plate. Finish the hole in the stand with 5mm drill. Put M5 screw inside and tight the stand to the crust. Draw numbers on shells with a permanent marker or 3d-pen.