One draw back is that with a cordless power tool someone else can t simply unplug it if you are involved in an accident. Make sure any cordless power tool has an easily accessed on/off switch. To make the recharge issue less of an inconvenience, some larger power tools including drills and saws come with two batteries. It could be to anchor something by installing nails or screws. Routers are great for carving and engraving. A router can be somewhat intimidating, but once you get comfortable using it, you will find it to be a remarkable power tool. Practice on something before you use one on a project to get a feel for it. One speeds do work well, but sometimes it will take you longer when you are doing a project. If the speed it too fast for the particular project then you can damage your project. Different sized drills can handle a project better than others. It also depends on the types of materials you are working with such as concrete, metal, plastic, and wood. They commonly wear a tool belt for eight to twelve hours a day, five or six days per week. It appears that the power tool industry has made some steps in the right direct when it comes to making the majority of power tools accommodating for both left handed and right handed individuals. Moving the power switch made a huge different on many of these power tools. This includes trying to cut materials with a saw or saw blade that was not designed for it. Don t alter a power tool to make it faster or to do something that it wasn t designed for. You really don t know the effect that is going to have on the operating capacity of the power tool. It is never a good idea to operate any type of power tool if you have been consuming alcohol. They are great for trying to router very small parts, as they hold everything securely in place for you. Routers are often quite loud, so make sure you wear ear plugs. They can also result in large amounts of dust particles in the air depending on the type of material you are working with. A respirator is a good idea if you are using a router on wood.