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// h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib // h_wall(h=4, l=right_rib_x); // bottom right [right_edge, rotate_vector_sin * height + rotate_vector_sin * rail_depth] // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // bottom right [right_edge, rotate_vector_sin * height], // top right [left_edge + height * rotate_vector_cos, rotate_vector_sin * height + rotate_vector_sin * height + rotate_vector_sin * height + rotate_vector_sin * height], // top right [left_edge + height * rotate_vector_cos; [left_edge, rotate_vector_cos * rail_depth], // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // top horizontal rib // one more vertical to mount a circuit board sideways on // h = engraved_indicator_depth * 2, $fn = smooth // outer pointy indicator // cube size of circle fragments in.

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