Mold Making with Claire

January 21, 2018

Making the Cottle

Using the lathe I worked with Claire to center the clay and create the shape thatโ€™ll form the step I need at the top of my finished mold. This step is important when making a slip cast mold – if the mold was just flat at the top there wouldnโ€™t be room for a spare at the top of my form. This is useful as I can overfill the mold and the excess at the top – the spare – can be trimmed away which will help introduce air between the mold and the drying slip.

Once this base was made I formed a cottle around the outside, once this was in place I clamped the edges to make sure it didnโ€™t slip apart. I tied it all together with string, rolling clay around the base to ensure the plaster didnโ€™t leak out of the bottom.

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