Step through the build, then change the stove and watch what happens to the draft, the fire and the heat stored in the bench. All sizes are inside clear openings in centimetres.
3D view
Drag to turn it, scroll or pinch to zoom, right-drag or two-finger drag to move it. It follows the sliders and the build step above. The flow shows at step 8, while the stove fires. Simulated shows the gas paths worked out in 3D for the guide J-tube, and works only at those sizes.