Using Free waste oil fuel, these easy build furnaces have more than eough power to melt Aluminium, Copper or even cast Iron with ease. They can also be used for scrapping to seperate things like aluminium and copper from steel. They are easy to construct and use no special tools, fittings or machineing. This makes them Cheap as well as simple to build and cost nothing to run. There are various layouts and designs to suit a range of purposes and requirements. For construction and operation tutorials and demonstrations, see my Channel at youtube.com/user/glumpy10/videos and subscribe for new designs and applications of these burners.