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Latex Mold for Cement Casting | Page 6


Figure 36


The latex mold is placed back into the shell mold in preparation for casting. The dry cement ingredients, fine sand and cement powder are measured out and combined in a mixing bucket.


Figure 37


The ingredients are well mixed by hand.


Figure 38


A powdered concrete coloring agent is added at this time to give the casting more color interest.


Figure 39


The mold halves are combined and held together with mold straps. Water is then added to the dry concrete ingredients in a ratio of 1000 grams cement, 1000 grams sand and 150 grams of water.


Figure 40



After the concrete has been thoroughly mixed it is slowly poured into the acorn mold. A slow pour is preferred as the concrete mix is thick and it also allows the concrete to better flow into all the smaller areas of the mold.


Figure 41


The mold is tilted slightly and tapped on its side for several minutes. This drives the air bubbles to the surface. If air bubbles remain in the casting material they will result in a deformed surface filled with pock marks. 

The mold is then set aside to cure undisturbed.


Figure 42


After curing, the mold is opened to reveal a perfectly finished concrete casting ready to decorate the garden.

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