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Duration (?)1h 0 min.
Cost (?)~3 CHF
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A cast allows, for example, to reproduce a sculpture. For instance, in the casting room of the University of Geneva, almost all the statues are reproductions.


This project helps to understand the different stages of the molding process.


Depending on the technique, the mold is broken to extract the mold or can be reused. In the case of this project, the mold is broken.


It is advisable to mold small objects. Here we mould a thumb, but it is also possible to choose another model.


This project was developped for the magazine 'Campus Junior' of the University of Geneva.

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Manufacture of the mold paste

Mix well all the ingredients (maizena, sodium bicarbonate, water) in a bowl.
Put the bowl in a microwave for 15 seconds at max power.   A crater should form in the center ...
Mix everything. If the dough is too wet, warm it again for 10 seconds, until you get a consisten ...
Knead the dough well until it is homogeneous.


Cover your thumb with dough and press lightly so that the imprint is well marked (without air po ...
With a non-sharp knife, cut a slot on the edge of the mold
Open the slit gently to remove the thumb.
Put the two edges of the slot back together (do not force).
Let it air dry for 24 hours with the hole facing up.   Patience!


Remove the wick and metal part of the tea candle.   Break the candle into small pieces and put ...
Put the glass with the candle pieces in the microwave (or bain-marie) for 30 seconds.   Check ...
Take a little melted wax in a spoon and plug the slot and any other holes in the mold.   ...
Pour the rest of the wax into the mold, all the way to the top.   Store the mold vertically un ...
Remove the mold in small pieces, being careful not to remove any wax.   If there are traces of ...

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