// -*- C -*-

india_nom = 27.0;
india_slop = 0.63;

middia_nom = 31.0;
middia_slop = 0.10;

outdia = 44.0;

htop = 5;
hbot = 7;

$fa=3;
$fs=0.1;

// calculated

india_use = india_nom + india_slop;
middia_use = middia_nom - middia_slop;

module Plan() {
  polygon([[ india_use/2,    -hbot ],
	   [ outdia/2,       -hbot ],
	   [ outdia/2,       0     ],
	   [ middia_use/2,   0     ],
	   [ middia_use/2,   htop  ],
	   [ india_use/2,    htop  ]]);
}

module Adapter(){
  rotate_extrude(convexity=5)
    Plan();
}

Adapter();