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Knob_height, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin - title_font; left_rib_x = hole_dist_side + thickness; working_height = height * rotate_vector_cos, rotate_vector_sin * height + rotate_vector_sin * height + rotate_vector_sin * rail_depth] // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // top horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib h_wall(h=1.6, l=right_rib_x); // one more to mount the circuit board sideways on // h = z height, how far the wall comes out of the rail + a safety margin // margins from edges v_margin = hole_dist_top*2 + thickness; v_margin = hole_dist_top*5; width_mm = hp_mm(width); // where to put.

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