Mars Globes (Highly & slightly exagerrated)
by neurothing, published
Per request, this is a globe of the planet Mars. The primary file (marsglobeexag2.stl - printed in natural ABS) is vertically exaggerated about 50X. The other file (marsglobeexag.stl - printed in silver ABS) is only exagerrated about 10X. If you print it large the less exaggerated one would be suitable for painting and display, but for my purposes (a tactile model for bringing space science to the blind) the more exaggerated is my choice. Olympia Mons looks like a nipple and Valis Marineris almost cuts through the shell.
This is not a derivative, but a serious tip of the hat to tbuser for his Mars Surface Map (http://www.thingiverse.com/thing:25319) as I used the same altimetry source data for the heightfield, which was then attached to a sphere (radius = width of heightfield/2*pi and aligned under the heightfield mesh) using the ApplyMeshUVN command in Rhino3D.
To get the differences in vertical height, I just changed the vertical height setting (V option) during the ApplyMeshUVN command - the default value of 1 yielded the exaggerated version, applying a value of 0.2 gives the smoother version.