Advantages and Disadvantages of  Shell Mold Casting:

Advantages Shell Mold Casting:

1. Shell mold casting is a versatile process that can be used to produce parts made from a variety of different materials, including metals such as aluminum, brass, and steel.
2. Shell molding is a relatively simple process that can be used to produce high-quality castings.
3. The two-part mold allows for easy removal of the casting, which minimizes damage to the original product.
4. The use of a plaster or resin mold allows for a high degree of accuracy and detail in the casting.
5. It produces a high-quality cast.
6. It is a Short production cycle, increased work surface area, increased strength.
7. Shell mold casting has a very high level of dimensional accuracy and surface finish, but there is room for greater thickness variation (because it is more material-dependent).
8. It produces parts with a very good surface finish. This is because the molding sand sticks to the casting very well, which minimizes the formation of defects on the surface.
9. shell mold casting can produce complex parts with a high degree of accuracy and repeatability. 
10. The process is often used for small-batch production as well as large production runs.
11. Shell mold castings are generally less expensive than investment castings or die-cast parts, but more expensive than sand castings.

Disadvantages Shell Mold Casting:

1. The process can be slow and expensive, particularly when using a resin mold.
2. The quality of the casting can be affected by the accuracy of the mold.
3. The process is not suitable for casting large or heavy objects.
4. Tooling cost is expensive and the molten metal needs to be fed into a vacuum chamber so it is not oxidized from contact with air.
5. Shell Mold Casting is that it can be a bit messy.
6. The molten metal will often splash out of the mold and onto the floor or bench, so you need to be careful to protect your surroundings.
7. The mold should be heated before you can pour your metal into it. This can be a problem if you are using a crucible furnace, as it takes time to heat the mold and then wait for the metal to cool down enough to pour it out.

Conclusion: 

In conclusion, shell molding is a versatile and accurate casting process that can be used to produce high quality castings. The two-part mold allows for easy removal of the casting, which minimizes damage to the original article. The use of a plaster or resin mould allows for a high degree of accuracy and detail

Processes such as heat setting also add to overall cost and time.