Earth Relief Globe

thingiverse

This relief globe showcases the sea floor, created using "globe" software by DJ Moews under GNU General Public License. The data is sourced from Scripps SRTM30_PLUS V8.0, which can be used non-commercially (license details available at srtm30plus_copyright.txt). Two STL files, n_hemisphere.stl and s_hemisphere.stl, are provided for a 5-inch globe; the red version in the image was scaled to 80%. The command used to generate the globe was 'globe --map altitude data/srtm30plus 5400 2700 sbigendiandibyte --gridpoints 512 --map-scale 60 --cut-plane 0 0 1 --explode 1000000 >bigz.stl'. Two halves were separated, centered, and scaled to create the STL files. Printing them directly on the build platform with two shells and 2% infill minimizes warping and ensures a nearly invisible seam at the equator. A larger 6-inch globe was printed using four pieces, but ABS warping affected thin edges. Planes 1 0 0 and 0 1 0 can be used for cutting to minimize warping imperfections at poles; however, this increases print time to over 20 hours.