Hood For Harman MarkII

Did anyone make a hood for there coal stove to distribute heat from stove to central air trunk line. I made one out of ash tub just to try .... sat on top of harman and added a 6 inch line from top of tub to return side of hvac system i run fan on hvac system to warm house up and when fan is not running heat makes it way and comes out of the return vents can anyone post some pics of your stove with a duct on top so i can get some ideas on how to make one ......

http://www.nepadigital.com/bb/about2302-30.html

See link above. The hood seems to work very good at keeping the stove room cooler, as well as getting the heat to the first floor.