Jig grinders are highly specialized tools that are used to produce highly precise and accurate cuts and finishes on workpieces. However, there are a number of different terms that could be used to describe this type of tool, depending on the specific context in which it is being used. Some possible synonyms for a jig grinder might include precision grinder, tool and cutter grinder, or even die grinder, depending on the specific features and capabilities of the machine. Ultimately, the choice of terminology will depend on the specific needs of the user, as well as the type of workpiece that is being created.