To fit it to a horse you warm it up to soften it, and mould it around the animal's hoof.

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At one point, one worker holds up a sausage covered in green mould, saying it would be cleaned, dried and re-used.

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Another liberal in the mould of Ms Sotomayor might fire up Mr Obama's loyal base.

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This model is then "sliced up" on the computer into horizontal layers, which can be used to make a silicon mould.

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