Mosaic Dish
 
Level: Easy
Duration: Short (1-2 hrs)
 
Materials needed: 5 lbs. of low fire 
white moist clay, HS01 hump/slump, 
SG08 Medallion sprig tool, 
one yard of canvas,  Sandbag 
(place one cup of play sand into 
handkerchief and tie to close)
Plaster forms and tools can be successfully used 
to create imaginative and unique clay pieces. 
Because of the absorbent nature of plaster, clay 
can be depressed into highly detailed sprig molds 
and lifted from the mold without sticking. Minute 
details can be successfully transferred from plaster
 to clay. The absorbent plaster forms help to assure 
an even and timely draw of moisture from the clay 
body, limiting cracks and sticking.  Convex plaster 
forms are known as "hump molds" while concave 
plaster forms are known as "slump molds". Plaster 
forms help even the first time student create clay 
hand building projects with fantastic results!  

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To create the “clay puzzling” dish on a hump, 
draw a 7” x 7” square on a piece of paper. 
 
Roll clay to create a coil around the perimeter of 
the square on the paper.
 

Push clay into a sprig mold (the medallion 
shown in the center of the dish is found 
in CPI mold #SG08).
Using a small ball of clay,  lift the clay from 
the sprig mold. Place the clay sprig face 
down into the center  of the 7”x 7” square.
Begin filling the area between 
the sprig and the coil perimeter 
with balls of clay. After the entire 
7” x 7” square is full of balls and 
the face down sprig, smear the 
balls and sprig together. Add 
moist clay where necessary to create 
a flat smooth surface. Lift the 
paper and remove the paper from 
the clay.
Place the clay smooth side up over the square 
hump mold. Ease the clay onto the hump using
 the handkerchief pouncing too. Use slip to add ball 
or coil feet to the bottom of the dish if desired. 
Remove the project at the “leather hard” stage in 
1-2 hours.  Allow to dry completely before firing. 
The project looks great with both transparent 
and art glazes