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A regular polygon. ≥30 means "round, using current quality setting". Sphere_indents_faces = 16; knob_smoothness = 20; // How much horizontal space needed for left-hand and right-hand sub-panels left_panel_width = 12*3 + tolerance*2; // rib + half a jack col_right = width_mm - thickness; // draw panel, subtract holes union() { cube([board_width, board_height, thickness]); cylinder(thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cube([cutout_width, cutout_height, thickness+3]); cylinder(h=thickness+standoff_height+3, r=hole_radius, $fn=360); vertex 0 -6.2584 7.81508 facet normal 0.643673 0.528246 0.553752 facet normal 2.337051e-01 2.008426e-03 -9.723055e-01 facet normal -0.0694748 0.705391 0.705406 facet normal 9.964592e-01 8.406732e-02 1.348105e-03 vertex -1.045318e+02 9.970655e+01 2.655000e+01 facet normal 7.143570e-001 6.997815e-001 -0.000000e+000 vertex 3.318426e+000 4.564005e+000 9.983999e+000 vertex 2.847970e+000 4.867598e+000 9.983999e+000 vertex 5.645941e+000 5.707424e-001 2.496000e+001 vertex 5.678241e+000 1.176720e-002 9.983999e+000 vertex 6.697503e+000 -2.390578e+000 2.496000e+001 vertex -3.765772e+000 5.933461e+000.

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