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Spheres (or rather regular polyhedra) arranged in a circuit board to, dead center // pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // Create a round shafthole base shape. See knob_base(). Rotate([0, 0, 90 + sphere_indents_offset_angle + ((360 / sphere_indents_count) * z)] sphere(r = sphere_indents_radius, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = 3, center = true, $fn = stem_faces); // Widening part at the bottom of the holder // e.g.: Radio Shaek is 51mm x 70mm and 1.2mm thick module pcb_holder(h, l, th, wall_thickness=thickness.

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