Makeup Artistry - Jess Brown

Now that the sculpts have been transferred to the polyurethane cores and finished, it is time to make the second part to the snap mould. Figure 1 - Finished sculpt (Brown, J. 2021) The first stage is to cover the core in a layer of plasticine, excluding the keys. This is so the keys and recessed keys that will be made in the mould will fit together properly. A 1cm gap should be left between the plasticine and the sculpt, as this will be the cutting edge when the prosthetic is made. The plasticine was run through a pasta maker so that it was all the same thickness. This must be perfectly smooth with no gaps as this will show in the mould. Creating the cutting edge is very important as "if your cutting edge is too wide, you'll get a thick edge because not enough silicone will be pushed out of the way. If your cutting edge is too thin, the edge of the appliance becomes too difficult to distinguish." (Debreceni, T. 2019).  A clay moat/flange and wall is then made around the s