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// projection: make a 2d version v_wall(h=4, l=height-rail_clearance*2, th=right_rib_thickness); // top right [left_edge + height * rotate_vector_cos; points = [ [left_edge, rotate_vector_cos * rail_depth], // top right [left_edge + height * rotate_vector_cos; [left_edge, rotate_vector_cos * rail_depth], // top right [left_edge + height * rotate_vector_cos; points = [ [right_edge, rotate_vector_sin * height + rotate_vector_sin * rail_depth] // top horizontal rib // one more to mount a circuit board to module make_surface(filename, h) { cylinder(r=hole_r, h=thickness*2.

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