Getting Started:Do not use unbaked clay on unprotected furniture or finished surfaces. Start with clean hands and work surface area. Good work surfaces include wax paper, metal baking sheet, or disposable foil. Knead clay until soft and smooth. For best results, clean your hands in between colors. Shape clay, pressing pieces together firmly. Bake on oven-proof glass or metal surface at 275 degrees F (149 degrees C) for 20 minutes. For best baking results, use an oven thermometer. DO NOT USE MICROWAVE OVEN. DO NOT EXCEED THE ABOVE TEMPERATURE OR RECOMMENDED BAKING TIME. Wash hands after use. Baking should be done by an adult.Begin by preheating oven to 275 degrees F (149 degrees C). Test temperature with oven thermometer for perfectly cured clay.
Preheat the oven to 275. When the oven is hot, place the clean and dry glasses upside down on a baking pan in the oven. While the glasses are in the oven, mix the Liquid Sculpey (LS) to the desired consistency. Pour Black LS into the bottom of a silicone baking cup. Pour Silver LS into the bottom of another silicone baking cup. Stir both liquids separately to get a feel for how thick each one is. Wipe your stirrer on paper towels between colors. The liquids need to be the same consistency in order for them to pour well. For example, my Silver LS is much thicker than my Black LS.
Add some Clear LS to each cup. I added a lot more Clear LS to my Silver LS because my Silver was so much thicker than my Black. Stir the Clear LS completely in and wipe the extra off of the stirrer with a paper towel.
Add some Sculpey Liquid Clay Softener to each cup. Again, I added more to the Silver. Add enough of both the Clear and the Softener to the liquids until they are close to the same consistency. We want them to be thin enough to run freely from the stirrer.
In a third cup, pour the Black on one side and the Silver on the other so they run together in the middle. This is most easily done by pouring the Black and Silver cups simultaneously into the third cup. We want them to meet in the middle and not be layered.
With a hot pad, remove the glasses from the oven keeping them on the baking pan. While the glasses are hot, pick up the double colored cup and pinch it to a point close to where the Black and Silver come together. This way both colors will run out at the same time. Pour a layer of the liquids around the flat edge of the glass and watch the colors drip down the sides. Because the glass is hot, the liquids will begin to cure as they run down. Our goal is for them to stop dripping before the liquid reaches the drinking edge.
This is how the glass should look with the colors slightly blended at the base and stopping before the lip. Bake the glasses upside down as soon as you are done pouring.
When the glasses are completely baked, remove them from the oven and allow them to cool completely. If there were areas where the liquid dripped past the drinking lip, you can gently peel it back and trim it with scissors below the lip. Gently peel back and super glue the longer drips into place so that the baked liquids will stay on the glass. Always hand wash the glasses after using them to preserve the design on the outside.
To clean up the silicone cups, use as much of the liquid as you can from each cup. Then bake the silicone cups at 275 for 20 minutes. When they are completely cool you can peel out the baked liquid and discard it.