I watched this amazing video on youtube. If any beginner is thinking of building an oil burner they should watch this video. It shows that liquids do not burn but the vapours or gas given of that liquid. It also shows that the liquid fuel has to be prepared so it will burn. ( spray bottle ) This holds true using a light oil or a heavy oil like waste motor oil. I wish I knew this when I started making oil burners as the first ones were failures.