the shuttle heat shields are dry compressed then fired (I think) also they are made to insulate so the beans would be comfortably cool inside while you get hotter and hotter (under the collar) trying to raise the temperature of the outside
I threw it in two pieces..
1: the strait cylinder, to which I added the veins and a piece to hold the shaft
2: the top cap and vein pieces were added.. and all the holes punched in..