What is the finishing process primarily aimed at?

The finishing process is primarily aimed at machining a surface to size with a fine finish. This step is essential in manufacturing as it enhances the appearance of the part and improves its functionality. A fine finish can reduce friction and wear, improving the ongoing performance of the component in its intended application. By focusing on detailed surface characteristics, this process can also ensure dimensions are precise, which is vital for parts that must fit together accurately in assemblies.

In contrast, increasing the overall size of a part is typically associated with initial machining processes rather than finishing, which refines rather than enlarges the workpiece. Joining two materials together falls outside the scope of finishing, as this is a separate process known as fabrication or assembly. Lastly, removing excess material can include a range of processes intended for shaping a part initially, rather than focusing on the detail and refinement that finishing entails.