After phoning Scott Glass and chatting my idea over it turns out they just cant work to the specifications I require to make my design work. So back to the drawing board.
Why does it have to be so complicated in shape? So I decided its time to go back to basics. Just a straight basic cylinder and to protect users from the heat a double wall will be implemented. Modeled in engineering foam to give me an idea of general shape and size and what is comfy to hold.