I have not posted on here in quite some time. I posted this on a different forum and it was suggested that you folks may enjoy seeing this. I actually posted one of these years back that I had made for use on my patio. This little guy is for my shed/workshop. I ran it today and it did pretty good and is very controllable. Anyway here is a picture. Made with mostly found objects and some 3" exhaust pipe and adapters for a flue.