How to make a plaster mold for ceramics (cup or mug)
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Video of the Production of the Slip Cup • How to Produce a Cup with a Plaster Mold List of Materials and Tools piece of wood - 7 to 10 cm larger than the copied piece pencil - mark the division of the piece clay - in this project 2 kg knife or spatula - cut burrs from the clay bed and burrs from the plaster wooden, metal or plastic spatula, to weld the clay ruler. silicone brush - finish clay in the mold sponge or soft cloth, to clean the piece cup or pot with water, to wet the sponge dishwashing detergent, release agent soft brush, apply release agent adjustable box, plaster containment walls. (you can use cardboard). quick plaster - in this project 8 kg plastic pot - to prepare plaster rubber strips bicycle or motorcycle chamber - to close the mold hand plane - finish (grinding) the sharp corners of the mold, you can use the spatula or knife to grind the sharp corners. My first plaster mold for ceramics, to reproduce a cup or mug. In this mold, you will use slip to produce a clay piece that, after firing and glazing, will produce a ceramic cup. This is a two-part molding process. Since it is a rigid plaster mold, the main thing is to find the center of the cup. Then, make a mold bed using clay up to half of the piece. To make retaining walls, I used an adjustable wooden box. You can use cardboard, wood, plastic, Styrofoam, or any rigid material to make the mold's retaining wall. In order for the plaster to absorb water from the slip, the mold must be 4 centimeters thick. After the plaster has dried for approximately 25 minutes, or when it is cold, disassemble the retaining box, remove the clay bed, apply release agent to the plaster. I used dishwashing detergent to prevent it from sticking, and make a retaining box again and add plaster to form the second part of the mold with a 4-centimeter thick wall. Wait a few days until the mold is completely dry before producing the piece.
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