how are a mold and a cast related
From Google:
When organisms are buried in sediment they may decay or dissolve away leaving a cavity or what we call mold, if the pace is filled with sediment, then an external cast is made. A mold fossil becomes a cast fossil when it is filled with sand or mud and hardens.
Thanks PsyDAG I can use this as a mini reference :)
A mold and a cast are related because they are both involved in the process of creating replicas of an object or organism.
A mold is a hollow cavity or container that is used to shape liquid or pliable materials such as clay, plastic, or rubber. It is created by taking an impression of the original object, which captures its shape and texture. Materials are then poured into the mold and allowed to harden or set, resulting in a replica or copy of the original object.
On the other hand, a cast refers to the replica or copy that is produced using a mold. When the liquid or pliable material is poured into the mold and solidified, it creates a solid three-dimensional representation of the original object. The cast retains the shape, texture, and details of the mold, allowing for accurate reproductions of the original object.
To create a mold and cast, the following steps are typically involved:
1. Prepare the object: The original object or organism is cleaned and prepared to ensure that the mold captures its complete shape and details.
2. Create the mold: A mold-making material, such as silicone or plaster, is applied to the object to create a mold. The material is poured or painted onto the object, capturing its shape and texture.
3. Allow the mold to set: The mold-making material is left to cure or harden, typically for several hours or days, depending on the specific material used.
4. Remove the original object: Once the mold is completely set, the original object is carefully removed, leaving behind a negative impression or cavity within the mold.
5. Prepare the casting material: The chosen casting material, such as liquid resin or plaster, is mixed as per the manufacturer's instructions to achieve the desired consistency.
6. Pour the casting material: The prepared casting material is poured into the mold, filling the negative space left by the original object.
7. Allow the cast to solidify: The casting material is left to cure or solidify, a process that can take varying amounts of time depending on the material used.
8. Remove the cast: Once the cast has hardened, it can be carefully removed from the mold, resulting in a replica of the original object.
In summary, a mold is used to create a negative impression of an object, while a cast is the result of pouring casting material into the mold, creating a replica of the original object.