Problem: Write an article based on this summary: Cut a shirt into a strip. Roll the strip of shirt into a ball. Fasten the ball with thread. Tie the string at both ends. Wrap thread around the ball. Secure the thread. Place the cloth ball in a bowl of rubbing alcohol. Transfer the cloth ball to a clean bowl.

Answer: You can also make a fireball using a cotton shirt as a base, which will make a bigger flame. First, cut the cotton T-shirt into a 2 x 4.7 inch(5 x 12 cm) strip. Make sure that you are using a T-shirt that is 100% cotton. If you use a shirt that is only partly cotton, it will melt instead of burn. After you cut your strip, roll it to create a ball. Try not to roll it too tightly, or else the rubbing alcohol will have a hard time soaking into the fabric. Also try to tuck in any loose ends or edges to make a more regular ball. Keep holding the cloth ball in your hand after rolling so that it doesn't unravel. Thread a large, sharp needle with cotton string. Then insert the needle into the cloth ball, piercing it all the way through the ball from one side to the other. Make sure that the string you are using is 100% cotton. Hold the ball while you pierce it with the needle to make sure it stays together. After you stitch through the cloth ball, tie the cotton string at both ends. Stitching through the ball helps the cloth ball to keep its shape. Don't break off the string, as you will keep using it. After you have stitched through the middle of the ball, take the cloth thread and wind it around the ball to help hold it together and keep its spherical shape. After you have wound the thread around the ball, insert the needle back into the ball and pull the string through the other side. Then cut the string and knot it so that it stays. Pour around cup (125 ml) of rubbing alcohol into a bowl large enough to hold the cloth ball. Then take the cloth ball and place it in the rubbing alcohol, allowing it to soak for a few seconds. Use a spoon or other object to turn the ball over in the alcohol so that both sides absorb some of the rubbing alcohol. Do not get any rubbing alcohol on your hands or clothes. After you have soaked the cloth ball for about three seconds, use a pair of tongs or tweezers to transfer the ball out from the bowl with the alcohol to a new, clean bowl. Make the transfer after only a few seconds so that the cloth ball doesn't soak for too long. If the ball absorbs too much rubbing alcohol, it will become soaked and start dripping. This can be dangerous when you light it on fire.

Problem: Write an article based on this summary: Fold back the tissue paper to expose the copper leaf. Remove the excess leaf. Look for and fix "holidays" on the surface. Seal and protect the surface.

Answer: Copper leaf sheets come in booklets and are separated from one another by protective tissue paper. Expose your first sheet of copper leaf and carefully lay it onto the sized surface. It will stick immediately. Gently pull the booklet away and let the rest of the sheet fall flat onto the surface. Press down firmly to adhere the copper leaf. Wear cotton gloves so the copper leaf doesn't stick to your fingers. Work in a draft-free area. Copper leaf is extremely thin and can be easily disturbed by a draft. Use your fingers to tap down the copper leaf to ensure it is fully adhered to the surface. Then use a soft paint brush or cotton ball to brush away any excess leaf. Continue the same process of exposing the sheet, dropping it, tapping it down and brushing away the excess until you've covered the whole surface. Once you've covered the entire surface of your project with copper leaf, inspect it closely. Holidays are places where the copper leaf didn't adhere properly. Use more copper leaf to fill these "holiday" areas in. Try to avoid touching the gilded surface too much at this point, since your fingerprints can leave permanent marks on the surface of unvarnished copper leaf. Surfaces gilded with copper leaf will tarnish easily and quickly. A protective sealer needs to be applied to protect from oxidation. Apply one coat of oil-based varnish or specially formulated acrylic topcoat with a paint brush. Allow the sealant to dry completely before handling your project. See the instructions provided with your varnish product for more information about curing times. You can obtain varnish or topcoat from most home improvement and craft stores. It also comes in spray formulas.

Problem: Write an article based on this summary: Open Twitter. Tap on the tweet. Tap Block @account. Tap Block to confirm.

Answer: It's the light-blue app with a white bird. Log in with your email, phone number, or username and password, if you aren't logged in automatically. It's located in the top-right corner of the tweet. Promoted tweets have a "Promoted" tag at the bottom. Instead of "account", this will display the Twitter account of the company or service that promoted the tweet. This will open a pop-up window asking you to confirm. Blocked accounts will not be able to follow or message you and their tweets and ads will not appear in your timeline. Tap Undo in the bar at the bottom to immediate unblock the Twitter account. You can always unblock a Twitter account later at any time.

Problem: Write an article based on this summary: Run the pump for two minutes. Watch the sight glass. Turn the pump back off.

Answer:
Once your waste hose is properly positioned, it is time to turn the pump back on (remember to turn on the circuit breaker as well). Allow the pump to run on the backwash setting for at least two minutes. Although two minutes is a general guideline, the best way to determine whether or not you have adequately back washed your sand filter is by keeping an eye on the sight glass. When the water flowing through the sight glass runs clear, you know that your filter is clean. After you have completed your backwash cycle, you will need to change to a new setting. Once again, before changing the settings on your valve, you must turn the filter completely off.