linear_extrude (height=3)
            import (file="Untitled.dxf", layer="fond", $fn=100); 

difference(){
    translate([0,0,2.99])
        linear_extrude (height=29.01)
            import (file="Untitled.dxf",    layer="boite", $fn=100);
  
union(){    
  translate([0,0,25])
        linear_extrude (height=3)
            import (file="Untitled.dxf",    layer="glissiere", $fn=100);
   hull(){
   translate([25,-5,10])
   rotate([270,90,0])
    #cylinder(h=120,r1=7,r2=7,$fn=50); 
    
    translate([25,-5,35])
   rotate([270,90,0])
    #cylinder(h=120,r1=7,r2=7,$fn=50);    
   }     
}
            
}

translate ([-70,0,0])
linear_extrude (height=2.6)
                import (file="Untitled.dxf", layer="couvercle", $fn=100);