In a layman’s terminology, plaster mould casting is known as a metalworking procedure. It is more or less similar to the sand casting. The only difference lies in the materials being used, wherein, plaster mouldings material is made of plaster of Paris and not sand.
If you want to accentuate the look of your place, you can take help of quality plaster mouldings, available in different types and shapes. This kind of plaster mould casting is used with the non-ferrous materials.
The items primarily used for their casting can vary from 30g to 45 kg in weight. The preparing time is usually not more than a week.
The production rate starts from 1 to 10 units on an hourly scale and can be procured with plaster moulds. Some of the parts, made using this plaster model are valves, gears, lock component, tooling, fittings and ornaments.
Know the Procedure
There is a proper procedure followed for making quality plaster mouldings. If you are willing to use some DIY steps for creating this mould then start following the given steps accordingly.
- For the prime stage, you need to mix the plaster of Paris with a little bit of water to form a thick paste.
- After that, this paste is mingled with silica flour, talc and similar such additives. The main aim of these additives is to control the present settling time and improving the strength.
- After the mixture is ready, it is poured over casting pattern.
- You have to wait for at least 20 minutes before it gets set and the mouldings can be removed.
- The pattern used for this mouldings is made of metal or plastic.
- After you are done striking the pattern, the next step is to bake the mould for some time. This procedure helps in removing moisture and makes the product hard and unbreakable.
- For the casting procedure, two halves of the moulds are assembled.
Advantage of Two Part Moulds
Most of the times, you will notice that people tend to use two parts of quality plaster mouldings in place of one. There are many reasons behind such changes. Two-part moldings have many advantages which are difficult to find in one part. If you have a complicated structure for molding, then two moulds can help in achieving the exact shape and design. A single mould lacks advanced features like protrusion. But when it comes to two parts molding, you can be sure of receiving the exactly same product.
Materials for Making Moulds
There are some important materials which must be kept handy, while working on quality plaster mouldings. The object which you are willing to duplicate must be more in quantity, so that if you screw up the first mold, you can use the other ones.
- You need a little more than a handful of plaster of Paris
- You need hot glue which can be removed quite easily after the product dries up.
- Modeling clay or play dough or any other items with the same consistency
- Soap or professional mould releasing spray
- Paintbrush and water
- Portfolio paper cover or anything else but not a newspaper
- A plastic box or strips of plastic used to glue together a hollow box
Apart from the materials available, there are some additional items, which you need for making the duplicate wax products. Some of them are cooking stove and pot, large candle and boiling water. If you are aware of the steps, you can easily create quality plaster mouldings. However, for industrial use, there are different machines used for manufacturing the items.
If you have any particular specifications in mind, then it is advisable to call the experts and let them custom make the mould as per your requirements.