Cement-bowl with a snail out of the kneading-cement
Step 1: Cement-bowlAs preparation, put the large plastic semi-sphere on a stable surface (e.g. can, pot or the like), so that it doesn’t wobble and coat its inner side with a cooking oil. Coat well also the outer side of the small plastic semi-sphere with a cooking oil.
Step 2Fill the plastic bucket with about 100ml of water and then gradually add about 1 kg of the creative-cement powder. Stir this mixture by using a wooden stick until a smooth and mouldable mixture is obtained.
Step 3Fill the already prepared large plastic semi-sphere with the casting compound. Let the mixture rest for about 1-2 minutes. Then press immediately the oiled smaller plastic semi-sphere centrally into the poured cement-mixture until the desired depth is reached. Then immediately press the oiled smaller plastic hemisphere centered in the poured concrete mass. By carefully pushing back and forth, you can safely align the position. Finally, weigh down the inner casting mould to the desired depth by using the pebbles or small stones.
Step 4Let it dry over night.
Step 5The next day, you can demould one part of the object. Firstly, remove carefully the smaller plastic semi-sphere while bending it lightly on all sides and pulling it slightly upwards. Once completely detached from the mould, let it dry again for few hours.
Step 6Then demould the cement-bowl in which you turn around the semi-sphere and bend slightly the upper edge outward, so that the air can penetrate between the casting object and mould. Tap carefully the plastic semi-sphere onto your working surface (cardboard/foam rubber), so that the cement-bowl detach.
Step 7Small ridges or bumps, you can quickly and easily grind with sandpaper. If desired, you can paint the inner side of the cast bowl with the Chalky paint.
Step 8: Snail out of the kneading-cementChoose a location on the edge of the bowl where you gonna place the snail or another motif of your choice and get through the upper surface with a sandpaper. While working with the kneading-cement, we recommend you to wear the plastic gloves!
Step 9Mix the creative-cement (240g) with water in the ratio 9:1 (9 parts of cement : 1 part of water). This corresponds to about 26 ml. Stir the water slowly, gradually add it while constantly kneading. Knead the crumbly mixture with damp disposable gloves (if necessary, moisten several times) until the desired consistency is achieved.
Hint: You can mix also, quickly and easily, the kneading-cement in a sealable container. Here also add the water gradually by stirring it constantly, then close the container and shake it well. That way there is less dust and the parts intermix perfectly.
Step 10Sculpt by hand a snail or another motif of your choice.
Hint: The cement mixture should be smooth and easily malleable. If the cement is cracky during kneading, just sprinkle it with some water.