To get your chips / dust to smoulder buy the correct stuff, MK Ingredients (outside Exeter) can help, about £18 for 15kg bag, oak or beech will do, small chips best about size of shotgun powder flakes. Use any steel box about the size of a shoebox, drill two or three holes 11/2 in the end and get a blowtorch to start the process off. After ten minutes the dust / chips will have a nice burnt channel in around two inches. The dust/chips which will continue to smoulder for around twelve hours. As it reaches the end back fill with chips and it will work backwards. I messed around trying to use sawmill leftovers, being clever, it is not consistent and for cold smoking you need time. As I've previosuly mentioned, my cold smoking can be up to five days. Forget any automation it is just not required, neither are fans. A large steel cabinet would do as long as there is an updraft up and out of the chimney. Forget Bradley smokers, and the like, large steel cabinet, quality commercial chips and correct curing.
