Star out of concrete 21.5 with metallic strips

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Star out of concrete 21.5 with metallic strips

Difficulty

Duration

60 min

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Instructions in 8 steps These concrete stars are particularly eye-catching thanks to the copper-coloured recess. This recessed strip can be achived by gluing a strip of foam rubber into the mould and then pouring in the concrete paste.

Besides the articles listed below, you also need: Cooking oil, support out of Crepla or cardboard, scissors, ruler

And this is how it works:

Step 1

Cut a strip 1 x 20 cm long out of the Crepla sheet and affix it inside of the casting mould by the means of the adhesive tape. Finally, coat thoroughly all of the inner surfaces of the casting mould (the Crepla strips as well) with the cooking oil.

Step 2

Pour about 190 ml of water in a plastic bucket and then gradually add approx.1900 g of the creative-cement powder. Stir this mixture with a craft wooden stick until an uniform and castable mass is obtained.

Step 3

Fill the prepared star-shaped casting mould with the casting compound until you reach the desired height. Let the mixture rest for about 1-2 minutes. Thereby tap repeatedly and slightly onto the mould to release any air bubbles from the cement mixture.

Step 4

Let it dry out overnight.

Step 5

Now, you can demould carefully the cured object by turning the star-shaped casting mould around and laying it on a support out of Crepla or cardboard. Then carefully press slightly with the palm of your hand on the back of the casting mould, so that the air penetrates between the casting object and mould. Tap the star-shaped casting mould carefully & slowly in circles on your support, so that the star out of concrete becomes entirely detached from the mould.

Step 6

Allow it to harden. The curing time varies depending on the size and the temperature (at best, one to several days).

Step 7

Small burrs and irregularities can be quickly & easily grinded with sandpaper.

Step 8

For a particularly shiny effect, spread the strip soaked in the leaf adhesive, let it dry and then put the deco-metal on. Press it down with a soft brush, then polish it gently with a soft cloth and wipe excess residue off. At the end, if desired, coat it with the protective varnish.