You think it would work with rubbed out flake? When I pack rubbed out flake I pay special attention to filling in the sides as I go layer to layer, that gives me a much more even burn. I honestly do not have issues with heat because of my packing method. My only issue with heat is when I smoke too quickly and nothing can help that except a really thick walled quality pipe. I have some pipes that no matter how quickly I smoke, they do not heat up.