Article: If you want to gain any length on your hair, don't cut it. Trim it 1/8th inch to even out the ends but that's all. A curling iron is one of the most damaging instruments used on African American hair types. When a curling iron is used on your hair, the barrel cover clamps down on your hair causing a weak point.  With repeated use the hair shafts eventually break along these areas made weak by the curling iron. If you want longer hair, it is imperative that you stop using a curling iron to style your hair. Curling irons make hair, weak, dry and very thin. Instead try using curlers or keeping your ends evenly trimmed and simply wearing your hair down.
Question: What is a summary of what this article is about?
Don't cut your hair much. Avoid the curling iron.
Article: Before you remove rust, make sure that the knife is free of dirt and oils. You can just hold your knife under some warm running water to clean it. Work slowly and be patient – if you rush the job, or scrub too vigorously, you risk damaging your knife.  Use regular water to clean away any dirt or stains. Be sure to wipe away all traces of fingerprints, as the natural salts present in human skin can cause a blade to rust. Avoid getting water into the gaps between the handle and blade, where it may create new rust spots that are difficult to reach. Thoroughly dry your knife with a soft, clean rag after you finish cleaning it. White vinegar contains acetic acid, which will often dissolve rust. Dampen a rag with white vinegar and apply it directly to the rust spots, or soak the blade in a shallow bowl of white vinegar for tougher stains. Once the rust has dissolved, rinse the blade thoroughly with water to remove the vinegar. Then, dry off the knife with a clean, dry cloth. Lemon juice can dissolve rust stains on metal surfaces, but it may work even better when you use it with some salt or baking soda. Try using a mixture of lemon juice and salt or baking soda to remove rust stains from your knife blade.  Sprinkle baking soda or salt onto the rust spots, then wipe the blade with a clean rag soaked in lemon juice. Rinse away the lemon juice with warm water after a minute or two and then dry it with a clean cloth. Be careful not to leave lemon juice on your blade for more than a few minutes, because it can damage the metal. Baking soda can remove rust stains, although you may need to repeat the process several times. Baking soda is used in cooking and for many house cleaning chores – you may already have some in your kitchen.  Make a thick paste by mixing baking soda with water. Put about a quarter (1/4) cup of baking soda in a glass bowl, and add a small amount of water to create a paste. Continue to add water in small increments, until you have a paste that is thick enough to stick to the surface of the blade. Apply the paste to the blade, and allow it to soak for two to three hours. Scrub the paste off of the blade with a wire brush or fine steel wool to remove the rust spots. Rinse away the rest of the paste by holding the knife under running water. Then, dry the knife thoroughly with a clean cloth. A raw potato may remove rust stains from metal surfaces. Potatoes contain oxalic acid, which can dissolve rust.  Stick the rusted blade directly into a potato and leave it there for a few hours. Then, remove the knife from the potato, rinse away the potato juices, and dry the knife with a clean cloth. Throw away the potato after you are finished with it. It might have small pieces of rust stuck in it, so it is not suitable for eating. Dishwashing soap mixed with vinegar can also remove rust stains from a knife. Get some regular dish soap and mix it with white cooking vinegar, or clear cleaning-grade vinegar.  Mix one part dish soap with one part vinegar, and apply it to the blade with a soft rag. Then, rinse away the solution and dry off the knife. For stubborn rust stains, soak the blade in the vinegar dish soap solution for an hour. Then, remove the blade and rinse off the vinegar dish soap solution under running water. Dry off the blade with a clean, dry towel.
Question: What is a summary of what this article is about?
Clean your knife with water. Soak your blade in white vinegar. Apply some salt or baking soda and lemon juice. Use baking soda. Stab the rusty knife into a potato. Mix white vinegar and dishwashing soap.
Article: The oxygen sensors are small metal pieces attached to wires that connect into the sides of the exhaust pipe. Place a wrench around the bolt connecting the sensor to the pipe and rotate it counterclockwise until it’s loose. Pull the oxygen sensor straight out from the pipe before unplugging it from the wires connecting to your vehicle.  Your vehicle will usually have 1–2 oxygen sensors connected to the exhaust, but it may vary between make and model. Vehicles only have oxygen sensors if they have a catalytic converter. If your vehicle is from 1974 or prior, then the exhaust may not have oxygen sensors. Lie on a rolling creeper trolley to move around under your vehicle more easily. You can buy a creeper trolley from an automotive supply store. Wear clothes that you don’t mind getting dirty as well as disposable gloves so you don’t get too greasy. Penetrating fluid works between the bolt and nut threadings to add lubrication and make it easier to unscrew the system. Point the spout of the penetrating fluid directly at the nuts connecting the exhaust pipe to the downpipe attached to your engine. Make sure to coat all of the threadings evenly to make the job easier.  You can buy penetrating fluid from your local hardware or automotive care store. If you don’t have any penetrating fluid, it may be difficult to remove your exhaust system on your own. If your exhaust system is made up of multiple pieces, then look for bolts where the pieces connect to one another. Spray those with your penetrating fluid as well so you can remove each of the pieces separately. Start where your exhaust pipe connects to the engine at the front of your vehicle. Choose a ratchet bit that matches the size of the nuts holding the exhaust system to your vehicle. Place the end of the ratchet over the nut you’re loosening and turn it counterclockwise. Apply firm pressure as you rotate the nut since it may be stuck or locked in tightly. Continue unscrewing the rest of the nuts if the pieces of your exhaust system are held together by other bolts or clamps. Use a ratchet with a long handle so you can get more leverage while you’re disconnecting the old exhaust system. Look near the top of the pipe along its entire length to find the metal pins that extend up and into rubber rings on your vehicle’s body. Support the exhaust pipe with your nondominant hand as you slide the metal pin out from the rubber. Slowly and carefully take the other pins off so the exhaust system comes loose from the body of your vehicle.  If you have trouble pulling the metal pins off of the rings, try lubricating them with soapy water to help them slide out more easily. Don’t let the exhaust pipe drop since it could be heavy and it may hurt you or damage other components under your vehicle. Slowly take the exhaust system from the catalytic converter to the tailpipe and lower it to the ground. Carefully remove the system out from underneath the vehicle so it’s out of the way while you’re working. You can either throw the old exhaust system away or you can try to sell the parts if they’re in usable condition. Do not drive your vehicle while you have the exhaust system removed since it may be illegal in your area and you will release harmful fumes.
Question: What is a summary of what this article is about?
Disconnect the oxygen sensors from underneath your vehicle. Spray the nuts along the exhaust pipe with penetrating fluid. Unscrew the nuts with a ratchet. Unhook the pipes from the rubber exhaust hangers. Pull the exhaust system down from your vehicle.