After watching pete from south west rod and customs he was explaining VW Steve had built a sodablaster himself at home. So i went on the lookout for this magical device. And from the pictures and short forum posts this is what i came up with. It works well, but does need improvement, and on top of that you cant reuse the baking soda once is been fired. 1KG could most probably happily do the the out side of a carbie.