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Left_rib_x = thickness * 1.2; right_rib_x = width_mm - right_rib_thickness; // projection: make a hole with radius: ", hole_r , " at ", width_mm - hole_dist_side - thickness; // column from edge plus hole radius //calculated x value of exact middle of panel after deducting left/right sub-panels slider_center = (width_mm - left_panel_width - right_panel_width)/2 + left_panel_width; slider_bottom = v_margin+8; module label(string, size=4, halign="center") { color([1,0,0]) linear_extrude(height) text(string, size, halign=halign, font=font_for_title); //} // draw.

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