The plunge router’s closest alternative is the fixed based router. Let’s look at some reasons why the plunge router is a better option:
1. You can use made or store-bought jigs to increase the accuracy of your router. It also allows you to do identical, repeated router tasks.
2. When you want to rout a pattern in the interior of a piece of wood use a plunge router. If you do it with a fixed-base router you have to tip it into the cut. If you do this you could damage the project or even injure yourself.
3. Say you want to create a circle. With a plunge router you can attach it to a trammel arm to rotate the router around a fixed point. Much easier than using a saw.