The following is illustrated by the 12 images below: The flange removed from the body during Stage 4, the Sculpting Stage, is attached to the lid section that was cut away earlier. After the flange is attached to the lid section, the unit is fitted to its body. The method used is to gently "turn" the lid into the body's opening. High points are indicated by the smudging of the porcelain by the red iron oxide. These high points are carefully scraped away. This process is continued until there is a near perfect fit. (The process is repeated three more times: once after the parts have completely dried, then after the bisque firing, and finally after the glaze firing.)
|(1-3) Preparing to Fit the Lid: The flange's diameter is shaped to equal the diameter of the lid piece. It is coated with a bead of white slip. The flange piece is attached to the lid piece and the excess slip is pressed out and removed. The flange's outer surface is sculpted to slope approximately 45° so that it will later fit into its body.
|(4-6) A shot glass is used to apply pressure to the junction of the lid and flange to ensure a strong attachment. Using a template, a circle is scored onto the body's rim approximately three mm from the outer edge of the rim. A scrap circle is removed by cutting along the scored line at an angle of approximately 45°
|(7-9) The inner rim of a glass is used to shape the body's rim which will then become the template for the flange. Smoothing for the Final Fit: When the lid is ready to be fitted to its body for the first time, a light bulb larger than the body's opening covered by a slightly moist cloth is gently rotated in the body's opening to remove clay. This procedure is continued until a uniform circular opening with a taper of from 30 to 45 degrees is formed.
|(10-12)The lid is gently rotated a few times -- just enough to identify and scrape away clay gathered at the wider regions of the flange. High points of clay are scraped or cut away from either the lid or flange for the final leather hard fit. A light bulb covered with a slightly moist cloth is rotated in the opening of the flange until the opening and tapered surface are uniform.
|EIGHT STAGES OF THE OCTAHEDRAL PORCELAIN PROCESS