Mould making is the process of producing a negative impression of an object which is used to create a permanent reproduction. This might be done for a number of reasons including for dental and medical work, for special effects, model kits or sculpture. There are a number of materials that are suitable for mould making and each of them are better suited to different kinds of mould making applications. Here, we shall highlight the properties of different mould making materials and explain why they are used.
Quite a common casting material, plaster is also a traditional mould making material used to take moulds from clay, plaster moulds are widely used in slip casting for ceramics and for sculpture often described as a ‘waste mould’ which is destroyed by chipping away from the casting it contains. Plaster is also used in medical incidents to create orthopaedic casts. Since plaster of paris hardens when it is wet, it is used alongside bandages to create casts that are then applied to encase broken limbs to keep them stabilised until they have healed.
There are many kinds of silicone rubber, with each one differing in its strength, viscosity and flexibility. Each kind of mould making silicone rubber is best suited for a different kind of mould making application, as they cure at different speeds and offer different temperature and chemical resistance. As well as different kinds of silicone moulding material, there are also different supporting accessories for when working with silicone rubber to help you to achieve the results you want with the utmost accuracy.
Flexible yet strong, vinyl rubber is a great material for casting because unlike other casting materials, it can be reused to make new moulds. Although it can be used to cast a wide range of materials including resins, waxes and plastics, making a cast out of vinyl rubber requires planning and potentially extra equipment to help you with the process. All of the equipment you will need however can be purchased alongside your choice of vinyl rubber, as you can see on our website.
Pre-vulcanised liquid latex
Pre-vulcanised liquid latex is very effective in making strong and durable moulds for a range of materials. It is also a very flexible material in that it can be adjusted to meet the needs of your project. If you are creating a special effects mask, for example, you can change the properties of the liquid latex with the addition of foaming and setting agents. If you are working on a large object you can change its viscosity by simply adding a latex thickener to get quick surface build up.
Searching for mould making materials?
At Alec Tiranti, we committed to supplying our customers with high-quality sculptor’s tools, materials and equipment for their respective projects. If you are interested in mould making and are searching for the suitable materials and equipment, then look no further. You can find all of the materials mentioned above as well as a whole range of useful extras and equipment on our website. If you have any questions about any of our products or would like any advice as to which materials would be most suitable for your project, please do not hesitate to get in contact with us.