![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFWCghAjHJTZFCSgpbND58MGTkGGQGCsWShZTJY_fGEQc-sKe-eeaXX0XXWY6m4NPRZbML56QywlSvfQiP-wJSlgLBvCiE1djjM8ykF6Mm9jnDbAryNFYv-1YRqDcKoO3cFjfyxlSi/s320/building+walls+for+plaster+casting.jpg)
Mould making done simply, efficiently and effectively. The First phase of mould making. Splitting the prototype, taking care of undercuts . Building the divisions (Leather-hard clay slabs) - determined by the number of sections to be moulded. I normally secure the prototype in a clay slab to ensure no plaster penetrates below the prototype and it also provides support to the extruded plastic sheeting (to hold its shape - determined by the thickness of the plaster walls).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiWTtDYwivQDtq0jF86wxb-wGbZqVJoRoPGf5sjLUKkGjrD-5-Rs7KPunVjeyz-DNa2rSZLEjrwa0WOqfWhOQ3YKkCth5-0jBwa-X6nXzWcurFL8SLhCzUQCkFyChvwZjhoA5P_Cu8p/s320/casting+sections.jpg)
Preparing the mould casings - using extruded plastic sheeting and the ever clever cable-ties to hold the casing together; ensuring no plaster escapes the casing. Soft soap is applied and left to dry to ensure that the moulds seperate from each other.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinxOoSf6an_my1_mHv4I0oHNAgcXjyCU_b7_DQPw1p2kMJVLdXaFV3wXmh_n77zwX1nTS4vYcfT-qPaPPX_4uoH1GC9deQu9-fR8zoKRAQj65yRz-oAB0QxOB44bPPZZNMzClKp6ek/s320/Attaching+pouring+spouts.jpg)
Poring spouts are attached before casting the final pieces normally the bottom that contains the opening (pouring spout) for slip casting.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhkXuQ5TVnhNVttAgzhGiymwKDgUWhvulVVigXQjuRmG-AElLHV2gpGqW9JIMK3tnj_FztELLH74wjpws_eXy5R3O7kh2ziK9AlU-6DZgz8JPpmsrzVxbxJYf_vw-Z2FfwLWssP6C06/s320/Prototypes+in+the+completed+moulds.jpg)
The moulding process is complete - the prototypes removed and moulds refined before drying. The keys that holds the pieces together are done with a large coin held at an angle and turned scraping the negative circular form as seen in the above image.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFp6s9pGCPSWTOxT92nBaj9-XBCG2vtWfKAUbC5SSGvJSAgkNGjOkf1L49yrsVklFU1THSBD2AqF_DkRfNzOzU3wqdCiOUXGOZVwnk_D2CI8566YO3RERo4kPa6eXIs7QkrAWRGJcM/s320/moulds+completed.jpg)
The completed moulds and prototypes - ready for drying. The tail was cast during the previous moulding process and ready for slip casting.
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