A heat gun is a multipurpose tool and can do a variety of jobs for you. Some heat guns come with multiple temperature settings but usually they come with a single temperature setting and used for paint stripping.
You come across different needs on day-to-day basis and require helping tools to carry out these tasks. Some tools are specialized in nature and perform certain tasks but there are some tools which are multipurpose and can be helpful in a wide range of needs.
Power tools with technical defects and cosmetic aberrations get send back to their respective OEMs where they are checked, inspected and rigorously assessed in order to analyze and correct the defects and faults.