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Clay to silicone | FX Calculator

This is a subset of the density calculation.
Select the clay you use.
Select the silicone you use.
Enter the weight of the clay.
The resulting number is the mass of the silicone you need to replace the clay.

The densities used in these drop-downs are collected from TDS where I could find them.
The density of the materials marked with a star (*) are uncertain since I found these in MSDS or on the back of the container. I think they are correct, but no guarantee.

Choose your sculpting material

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Choose your casting material

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Volume sculpting material: ml/cm3
Weight casting material: g

Density sculpting material: g/cm3
Density casting material: g/cm3

Complete
Congratulations you have completed all of the steps successfully
    Select your clay

    … from the dropdown menu.
    If the clay is not listed, but you know its density, use Material to material instead.

    Select your silicone

    … from the dropdown menu.
    If the silicone is not listed, but you know its density, use Material to material instead.
    The density is the mix of A and B.

    About the math

    The common trait in all mould making is volume. So we go from clay to silicone via the volume.