The difference is the twisted bit is the same diameter throughout it, while a braided point gets thinner towards the bottom. Countersink drill bits make the hole wider. This allows you to use flathead screws and get them flush with the material. This makes your project look more professional. A tile bit is especially designed for working with anything ceramic or glass. Finding Power Tools for Left Handed People Most power tools on the market are designed for everyone to use. However, if you happen to be left handed, then you may realize just how difficult it is to operate particular power tools. The on/off switch being in a location that isn t convenient or easy to get to in the event of an emergency is the most common complaint. Some of the positions you have to use it in won t give you enough area to have both hands on it. You can choose to use a drill with or without a cord. The cord models are traditional, but cordless drills help reduce accidental falls due to tripping over the cord and possible electrocution. You can also use them in places where a power source isn t conveniently located. I keep my power screwdriver fully charged and ready to go. It is the power tool I reach for the most. Since they come with a tip that can be changed from Phillips to a flat head, there is no need to have any other screwdriver around. A power drill, either with a cord or without, is very versatile. The biggest investment here is going to be on the various drill bits that you will need. A respirator is a good idea if you will be working with any power tool that creates dust including sanders and routers. It is a good idea to make sure you have a source of fresh air getting into your work area as well. A respirator ensures you won t be inhaling harmful chemicals or dust that is generated. Types of Power Tools The market is full of wonderful power tools, all designed to help you will any project you wish to under take. It can be tricky trying to decide which power tool you should use for a certain project. However, it is very important that you take the time to find out. You don t want to damage your project and you don t want to injury yourself by not using the right power tool.