A faithful rendition of Chu's Arduino bumper version 6 redrawn in DesignSpark Mechanical. I needed an Arduino case with some extra features, so my first step was to take the dimensions from the original bumper and redo it in DesignSpark Mechanical, as I don't have Autodesk Inventor. Other than the different CAD file format, it should be the same as the original. Original STL mesh is included but hidden in the rsdoc file so you can verify the accuracy. If you use it, I recommend pulling the exterior walls out a bit as the original is only 0.029", or ~.74mm, which is just under two extrusion widths at 0.40mm width extrusion.