The knob was to be formed and fired separately.
I made a 'cradle' for the shell so it would nest into the area where it joined the lid.
There is a hole in the top of the dome lid and a corresponding area in the shell where the two are connected with a small bolt.
The inside of the shell is solid with no indication a connection exists.
When both the lid and knob had been fired, I used good old Goop and closed the end of the bolt with a small nut.
The design is an homage to the nautical decorations on pieces I so admired at the Royal Worcester Factory Museum in the U.K.
And the jar is currently is at the Art Stop in Tacoma, WA.