Square Ring

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					                               The Square ring with 2 points setting
                              -Ring making without wooden mandrel-




                                            New things to learn
                                            1.   Ring making without a wooden mandrel.
                                            2.   Make your original tool “Circle Cutter”
                                            3.   New technique – stone and bezel setting by sandwiching
                                                 with Art Clay.
                                            4.   Partial sulfurizing technique
                                            5.   Stardust finish with diamond point




Time table
10:00 – 10:30      Making a circle cutter
10:30 – 12:00      Molding
12:00 – 13:00      Lunch break
13:00 – 14:45      Pre-finishing
14:45 – 15:00      Firing
15:00 – 16:00      Finishing

Materials that you will receive in the class
Art Clay Silver 650 20g×1
Art Clay Silver 650 slow dry 5g×1
Synthetic stone opal/white (3mm×2pcs, 2mm×2pcs) ①②
Art Clay original 2 prong bezel (3mm×2pcs, 2mm×2pcs) ③④
Copper plate for the circle cutter (40mm×70mm×1sheet) ⑤
Plumber’s pipe for the circle cutter (18mm×1pc, 16mmx1pc) ⑥⑦
Plastic sheet (100mm×100mm)

Materials that you have to bring to the class
Art Clay Silver 650 Paste type (small amount)
Art Clay Silver 650 Syringe type (small amount)
Syringe nozzle Blue/narrow

Tools and equipment that you have to bring to the class
Plastic strips (a pair / 1mm thick), roller, craft knife, tweezers, clay scraper, medium fine file, fine file,
sponge sanding pad (red, blue, green), sandpaper (#320, #600), stainless steel brush (extra fine),
stainless steel brush (long and short bristles), paint brush (flat-pointed), paint brush (fine-pointed), water
tray, rubber block, stainless steel net, ring gauge, diamond point for dremel, Flat pliers, burnisher, scissors,
metal polishing cream, polishing cloth, food wrap, cooking sheet(3-4sheets), pencil, ruler (approx.15cm),
memo paper, vinyl stick tape or electrician’s tape (0.2mm thick, 19mm width), permanent marker (fine),
small paper box for drying (about 3x3 - 5x5cm)
Making a circle cutter
1) Wrap electrician’s tape around plumber’s pipe to adjust its outer diameter according to the chart below.
  Make the diameter 5 sizes larger than desired ring size.

2) Wrap the copper plate around the pipe, and secure the end with a tape.

            Plumber’s pipe (thick)(18mm)                        Plumber’s pipe (thin)(16mm)
        Completed        Ring size     Layer(s) of        Completed         Ring size     Layer(s) of
          ring size      (when it's    electrician’s        ring size       (when it's    electrician’s
        (after firing)     dried)          tape           (after firing)      dried)          tape
            #13             #18            0                  #7               #12             0
            #14             #19            1                  #8               #13             1
           #15.5           #20.5           2                #9.5              #14.5            2
           #16.5           #21.5           3               #10.5              #15.5            3
            #18             #23            4                 #12               #17             4
            #19             #24            5                 #13               #18             5
            #20             #25            6                 #14               #19             6
           #21.5           #26.5           7               #15.5              #20.5            7
           #22.5           #27.5           8               #16.5              #21.5            8
            #24             #29            9                 #18               #23             9
            #25             #30           10                 #19               #24            10
       This chart is only as a rough guide. The ring size will be slightly off depending on the way the clay
       sheets are attached or when prefinishing the piece.

Make a ring pattern
Draw a rough pattern following below diagrams.




1) Draw a circle using a ring         2) Mark a short straight line with    3) Extend top and bottom line in
gauge on a sheet of paper. The        a pencil 3mm from the circle to its   parallel.
ring size should be 5 sizes larger    right, left, and bottom. Mark 7mm
than finished ring size.              from the circle at the top also.




4) Extend right and left lines        5) Draw spread curve lines from       6) Cut out the shape and also the
vertically until the top of the       tip of the vertical lines.            center hole. A square ring pattern
circle.                                                                     is now made.
Square Ring using original circle cutter
Step 1   Mix ACS650 20g and ACS650 slow dry 5g, and knead them well together. Make sure that the mixed
         clay remains no air inside. Mixing is to take advantage of characteristics of both types of clay.
         Note: Regular 650 clay is soft and easier to mix with 650 slow dry type which keeps moisture longer
         than other types of clay.

Step 2   Roll out the clay in 1mm thick on a cooking sheet.

Step 3   Make a hole on the clay sheet with the circle cutter. Place the ring pattern where the hole in the clay
         sheet and pattern meets. Cut the outer shape of the ring pattern with a craft knife. Repeat the
         process to make another one.

Step 4   Leaving 1/3 area from the top, apply some water on the clay surface. Attach the two sheets together
         lightly. Do not apply water on the top area as bezels or stones will be set later.

Step 5   Apply some water to the area where the bezel set. Set the bezel between the two clay sheets, and
         try to make some natural form designs.
         Note: Do not cover the bezel too tightly between the layers, otherwise the stone may not be fit in the
         bezel because of the shrinkage during firing. Make sure to set the bezel without prongs touching the
         clay walls.

Step 6   Repeat steps 2 – 5 to add layers of clay sheet, and make good
         balance and proportion (see right diagram). Make sure to keep the
         clay surface moist specially the bottom 2/3 area to be attached
         together.

Step 7   While keeping the good balance and proportion with a paint brush,
         adjust the depth of the prongs and angle position to be all
         horizontally parallel.

Step 8   Laying the ring on a tissue paper bed to support its shape, dry the piece completely.
         Note: Lying on a tissue paper bed would prevent deforming.

Step 9   Use sand paper or sponge sanding pad (200-400 grids) to clean the ring hole.
         Note: If any gap appears between the layers, apply some paste type to fill in. Dry and clean.

Step 10 Clean both sides of the ring with a file or sponge sanding pad.
        Note: If any gap appears between the layers, apply some paste type to fill in. Dry and clean.

Step 11 Insert a small piece of fiber blanket in openings at the ring top. Fire the piece at 800C / 1472F for 5
        minutes.

Step 12 Matte-finish the ring with a stainless steel brush. (Extra narrow brush and so on)

Step 13 Use a burnisher to make the sides mirror finish.

Step 14 Prepare a small amount of sulphurizing solution. Use a narrow paint brush to apply some
        sulphurizing solution only inside of the openings. Hold the ring with chopsticks (or tweezers) and
        heat the piece with a hot air dryer until the opening turns dark color.
        Note: Try not to apply the solution on the area besides the openings. It would be hard extra work to
        clean off any excess.
        Caution: During heating with a hot air dryer, the ring becomes extremely hot, do not hold the ring
        directly with your fingers.

Step 15 Rinse the ring well.
        Note: If any unnecessary solution remains on the ring surface, the area turns darker later. If the
        surface turns darker, remove the area with a silver polish.

Step 16 (Optional decoration) Make some textures on the surface with a diamond point.
        Note: Position diamond point at same tilt angle to make consistent texture as much as possible.
Step 17 Set the stones on the bezels to complete.
        Note: Hold the two prongs with pliers and close little by little to secure the stone.




   +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Arrangement designs using 2-prong setting
                                   2-prong settings makes the stone looks even bigger,
                                   and keep well in the silver clay design.



                                                               2-prong setting is available in 2 sizes.
                                                                  K181A (2mm) x 5pcs
                                                                  K182A (3mm) x 5pcs

				
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posted:5/3/2010
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