I was looking for a rocket riding the top of a solid column of stiff foam. Somewhat disappointed. Metal parts, threaded or welded, would solve a lot of the ann

I was looking for a rocket riding the top of a solid column of stiff foam. Somewhat disappointed. Metal parts, threaded or welded, would solve a lot of the annoying leaks and disintegrations. I thought the porosity of the ceramic was needed to hold enough of the “catalyzer”.