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= 27.4 + tolerance; extra_depth = 75 + tolerance; rotate_vector_cos = 0.94; // 'x' of 20 degree rotation rotate_vector_sin = 0.34; // 'y' of rotation left_edge = -rotate_vector_sin * rail_depth; right_edge = height * rotate_vector_cos, rotate_vector_sin * height + rotate_vector_sin * height], // top right [left_edge + height * rotate_vector_cos; points = [ [right_edge, rotate_vector_sin * height + rotate_vector_sin * height], // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // bottom horizontal rib // middle horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle horizontal rib //} module make_surface(filename, h) { for (a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11.

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