minkowski() {
  cube();
  linear_extrude() {
    import("notfound.dxf");
  }
  linear_extrude() {
    import("notfound.dxf");
  }
}

minkowski() {
  linear_extrude() {
    import("notfound.dxf");
  }
  linear_extrude() {
    import("notfound.dxf");
  }
  cube();
  cube();
}
