This is because the manufacturers have worked hard to redesign them. The on/off switch is generally located in the middle of the power tool so it can be accessed from the right side or the left side. A mainly unknown brand of power tool, Porter-Cable, has introduced a circular saw kit that features the blade on the left hand side. The grade of sandpaper is determined by the number of sand granules on each square inch of the sand paper. The lower grade numbers mean it is coarser. Higher grade numbers mean the paper is finer. To cut your time down, start with a very coarse sandpaper. As you are about to complete the project switch to finer sandpapers to give you a great finish. If you have a particular project in mind, searching through all of those manuals can be time consuming. Try using the internet to look up the project you are going to do and you should find information on the best power tools to use for the job. You will likely find some very helpful hints for the project as well. The use of power tools by women has evolved as the family structure changed over time. Women have become more independent and the chores of the household have become less divided by gender. While women can operate most any power tool, there are some out there designed specifically for women to use. Don t worry, they aren t pink and cute! The size and the type of drill bits you need depend on the project. You can purchase them individually, but you will get a better deal if you purchase an assortment that are sold in a package. Saws are the most commonly used of the power tools out there. You should purchase four different types of saws, and you will be set to take on most any project. They come with very effective batteries that are long lasting. Some operate with a compressed gas in a canister. Both types are very effective, so it is a personal preference. It also depends on if you want to hassle with recharging the battery. To help you decide on the best model of power nailer for your needs, consider these features.