Black medium-sized star-shaped bowl out of creative-cement

Craftideas
Black medium-sized star-shaped bowl out of creative-cement

Difficulty

Duration

60 min

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Instructions in 10 steps Concrete in a star-shaped casting mould decorated with copper-coloured decorative metal flakes: a perfect Advent and Christmas decoration is obtained.

Besides the articles listed below, you also need: Cooking oil, sieve, pebbles to weigh down the casting mould, support out of Crepla or cardboard

And this is how it works:

Step 1

To start the preparation, put the larger star-shaped casting mould on a solid and even surface, so that it doesn’t wobble and coat its inside with cooking oil. Coat well the outer side of the smaller star-shaped casting mould also with cooking oil.

Step 2

In order to remove the larger pebbles from the cement, you should sieve the cement powder (about 1300 g) before mixing with water, through an ordinary household sieve.

Step 3

Pour about 150 ml of water (once the cement is sieved, the mixing ratio is changing according to the instructions on the package) and 30ml of the black acrylic paint in a plastic bucket and then gradually add approx. 1 kg of the creative-cement powder. Stir this mixture with a wooden spatula until an uniform and castable compound is obtained.

Step 4

Fill the prepared larger star-shaped casting mould with the casting compound up to the desired height. Allow the compound to rest for about 1-2 minutes. Tip: to reduce the air bubbles in the cement-casting compound, at first put one side of the smaller star-shaped casting mould on the casting compound and then put the rest of the mould slowly with a slight pressure. Once the whole casting mould has been placed, you can push it with a slight pressure to the desired depth and carefully align it back and forth. After that, weigh down the casting mould to desired depth with pebbles or small stones.

Step 5

Let it dry out overnight.

Step 6

The next day, you can demould a part of the object. Firstly, demould carefully the smaller star-shaped casting mould by bending and pulling it upwards slightly from all sides. Once the smaller star-shaped casting mould has been entirely removed from the casting object, let it dry once more for a few hours.

Step 7

Then you can demould the rest of the casting object from the mould by upturning the casting mould on the support out of Crepla or cardboard and then carefully press slightly with the palm of the hand on the casting object, so that the air penetrates between the casting object and mould. Tap the star-shaped casting mould gently in circles on your support, so that the star out of cement becomes entirely detached from the mould.