Here Carol is packing the smaller of our two wood fired salt kilns. This kiln has two bourry (downdraft) fireboxes underneath the kiln chamber, and it is not easy to decide where the flames travel by looking at the photo. In the smaller image the red line shows the general direction of the flame path from the right hand firebox to the exit flue at the back of the kiln (indicated by the blue mark).  The path from the firebox on the left (obscured by Carol) is the mirror image of that one. This kiln has a very even temperature distribution, and is used for salt-glazing. The plans of this kiln are now on the website SideStoke