NOTA: Ver la modificación hecha a la puerta, en http://www.instructables.com/id/Mejorando-la-salamandra-Improving-the-salamander/
About two months ago I found dumped in a landfill (the kind with a big sign "NO LITTERING") a CNG cylinder, little, surely belonging to one of several stolen cars that end up there in flames. With some difficulty I got up it, loaded in the trunk of the car and brought at home. After I put a question on Instructables "What I can do with it?". There were several suggestions, and finally imposed the idea of a salamander, because natural prize gas increased dramatically, and my little shop can be Siberia, without a heater.
NOTE: See modification to the door, in http://www.instructables.com/id/Mejorando-la-salamandra-Improving-the-salamander/
Step 1: Cutting (cortando)
Luego marqué con tinta indeleble la puerta y los agujeros de ambos extremos, y lo llevé a un taller metalúrgico para que lo corten, porque está hecho de acero duro y es imposible para mí poder agujerear los extremos, que tienen casi una pulgada de grosor. Me cobraron bastante el trabajo, pero yo no tenía elección, así que agaché la cabeza y lo pagué.
I drained the little gas containing the tube, removed the valve, filled with water twice and let it dry a few days to eliminate any possibility of explosion.
Then I marked with indelible ink the door and the holes at both ends, and took it to a metal shop to cut, because it is made of hard steel and it is impossible for me to drill the ends, which are nearly an inch thick. They charged me a good deal of money for the work, but I had no choice, so I bowed my head and paid.