Rounded Box (Well, really a half box)

thingiverse

Human: Complete Box Written in OpenSCAD Code. Rounded Edges and Corners for Human Interface. Variables are Available in the First Few Lines as Follows: xsize = length ysize = width zsize = height thick = thickness of sides roundc = radii of corners and edges fn_edge_out = edge outside # of segments fn_edge_in = edge inside # of segments fn_corner_out = corner outside # of segments fn_corner_in = corner inside # of segments All Dimensions are in Millimeters. Fn Values are the Number of Segments in Rounded Edges and Corners. High Values Increase Smoothness of These Elements, But Slow Rendering. Recommend Using Fn Values Shown to Start Your Design. I Make No Guarantees for Extreme Values of Variables, So Use at Own Risk.