A big advantage of sand casting is the variety of alloys or metals that you can use. You can use both ferrous and non-ferrous metals and alloys in sand casting. You can use metals or alloys with a high temperature melting point without destroying the sand casting mold. The hot liquid will not melt the sand.

Sand casting is a not expensive way to cast an object. Costs involved include the material and time to make the object that will be cast, the frame for holding the sand, the sand, and an item to pack into the sand.

You can do sand casting of very large objects. The limitation on the size of sand castingdepends on the size of the container holding the sand and the amount of sand in the container. Other limitations to consider are the cost of the alloys or metal that you will need to create the sand casting and the availability of a container large enough to melt the required amount of metal.
Projects made by sand casting can be inexpensive. Individuals new to casting can re-melt projects that do not come out correctly, repack the sand and try again.
The above is the brief introduction of the sand casting benefits, may be helpful for the buyers' reference.