What is an advantage of metal spraying for creating molds?

Metal spraying is a process that involves the application of molten or semi-molten metal onto a surface to create a coating or to build up parts, including molds. One significant advantage of metal spraying is its cost-effectiveness, particularly for large molds. This method allows for a relatively low investment compared to other manufacturing techniques, making it suitable for producing larger structures without incurring prohibitive costs.

In addition to being inexpensive, metal spraying is versatile and can yield mold surfaces with a variety of characteristics. This adaptability makes it a viable option for manufacturers looking to create large molds that can often be more expensive when utilizing traditional methods like casting or machining.

The other options do not align with the advantages of metal spraying. For instance, while small parts can be created with metal spraying, it is not limited to small applications, nor is it inherently the fastest method compared to alternatives. Additionally, the process does not typically create solid metal parts without additional steps; rather, it often requires post-processing to achieve desired properties and finishes.