Keep all cords out of water and away from solvents or you could get shocked or electrocuted. If you have never operated a particular power tool before, take your time getting familiar with it before you even plug it in. Read the owners manual that comes with the power tool. Find out about the types of blades and other accessories that can safely be used with it. There are many different models of the Dremel tool. The 400 Series offers high speeds as well as great quality. It is the most versatile of the Dremel series. The 300 Series is a precision tool. It is very compact and has several speeds to choose from. The Digital Rotary Dremel is very advanced. It features a LCD readout and an electronic feedback control. A cordless screwdriver is a very simple power tool, but one many of us love using. It sure makes getting screws in and out very simple. Most of them come with a magnetic tip that flips over from a flat head to a Phillips head. This means you only need one tool for all of your screws. I used to be afraid I wasn t getting the screws tight enough, but I don t have to work about that with a cordless screwdriver. If you are using a cordless power tool, you may want to remove the battery before you change anything on it. The inconvenience is worth your safety. Cords on power tools are another concern. Many power tool accidents have been eliminated by going to cordless power tools. If you operate any type of power tool that has a cord, make sure you have it properly secured. Since most power tools are designed to last a very long time, you want to find out about the availability of replacement parts. You also want to find out about customer support. It can be over the phone, by mail, or on the internet. It is important that customer support is available to you in the event you have questions, comments, or complaints about your power tool purchase. Find out if the power nailer has a jam release. You don t want to stop working throughout the day to spend time figuring out how to unjam the power nailer. You will want a power nailer that offers you an adjustable depth controller. This is because you will want to use it for different length of nails.