Final answer:
Deburring is the post-processing method that includes sanding parts to improve their appearance and tolerance, distinct from buffing, polishing, and anodizing which are different finishing processes. It smooths out rough edges, enhancing the safety and functionality of the components.
Step-by-step explanation:
The type of post-processing that includes sanding a part to improve its appearance and tolerance is deburring. Deburring is a finishing process used in manufacturing where rough edges or protrusions are removed from metal, plastic, or wood pieces. This process can be manual or automated, and it not only improves appearance but also enhances the safety and functionality of the parts by creating smoother edges.
Buffing and polishing are similar processes that are usually performed after deburring to give a smooth, shiny finish to the surface of the part. These processes might follow deburring if a high-quality finish is necessary. On the other hand, anodizing is a chemical process used to increase the thickness of the natural oxide layer on the surface of metal parts, providing increased corrosion and wear resistance.