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Production Processes
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As an example, we will explain the processes of producing unique silver accessories with PMC3 by making a custom designed ring.

1. Kneading and forming
Remove the clay from the bag, knead it quickly and form it. Because we will make a ring, roll a lump of PMC on an acrylic sheet or other flat surface to form a wire.
Note: Clay dries in a matter of minutes, so determine the shape beforehand. Once you unpack the clay, work it very quickly. Try not to repeat processes 1 and 2. If you want to add delicate modifications to the piece, do so after drying.


2. Rolling out
Adjust the length of the paper tape to the circumference of your finger and wrap it around a mandrel. Roll out the wire-shaped clay onto the covered mandrel to make a hollow shape. Overlap both ends, wet the joint, and lightly press together.
Note: Take shrinkage when firing into consideration and make the piece larger. It will help to wrap a measured paper tape around the cylindrical core before kneading the clay.


3. Drying
Use a hair dryer and thoroughly dry the ring around the mandrel (for approximately 30 minutes).
Note: Dry it completely, as it affects the strength of the completed project.


4. Drawing the design
After confirming the perfect dry condition of the PMC, draw your design on the ring with a pen.


5. Carving
Carve the design using files, cutter knives, chisels, etc.
Note: Because the clay before firing is delicate, handle with care to avoid damage.


6. End of modeling
When satisfied with the shape, the modeling process is finished. The key to a perfect finish is to smooth the surface with fine sandpaper or abrasive sponge.


7. Firing
Place the solid fuel into the silver pot, set your work (as in 6) on the mesh, and put the lid on. Cover the pot with a fire-prevention mesh hat and light the fuel. Before proceeding to this process, read and understand the enclosed Warning and Caution.
* The photo is a cross-sectional view of the kiln.

8. Brushing
After the firing process, wait until the work cools and then brush the piece. The ring is white when first removed from the kiln but the luster will be added by brushing.


9. Polishing
Use finer and finer sandpaper. Last, polish to a mirror-smooth state using Silver Cloth.
Note: Stop polishing in the middle to obtain a satin finish or have both mirror and satin finished surfaces for variety.


10. Completion
Sulfidize the work as an accent. When you are satisfied with the results, you are finished.
*The piece in the photo is sulfidized. After sulfidation, polish the part for a mirror finish only and the rest remains almost black.


Mitsubishi Materials Corporation