Article: You can't use a pen with a plastic tip to make a pipe because plastic melts and releases toxic smoke when it burns. Only use a pen with a metal tip that can be unscrewed to reduce the odds that you unnecessarily expose yourself to dangerous chemicals when you smoke.  You can use a pen with a metal tip and a plastic case, but it's better if the case is made out of metal as well. The tip of the pen is the small metal cone that surrounds the point when you're writing.
Question: What is a summary of what this article is about?
Find a metal pen with a removable cartridge and metal tip.

Problem: Article: It’s best to transplant cabbage to its outdoor location about two to three weeks prior to the last frost. Check the long-range weather forecast for your area to determine this date.  When you know when the date for the last expected frost, schedule a date a couple weeks in advance of that to transplant your cabbage.  For fall plantings, set the plants out 6-8 weeks before the average first frost date of the year. There are a few things that cabbages need to thrive, and sunlight is one of them. When choosing an outdoor location for your cabbage, look for somewhere that gets at least six hours of full sun each day.  Avoid planting cabbages in the same garden beds as cauliflower, strawberries, broccoli, and tomatoes. Cabbages will thrive in gardens close to cucumbers and beans. Cabbage loves fertile soil, so mix the soil in your seedbed with equal parts aged compost or manure. Water the bed so the soil is moist before transplanting the seedlings.  The ideal pH for cabbage is between 6.5 and 7.5. You can test the pH of your soil with test strips, which are available at most department, garden, and hardware stores.  If you need to lower the pH, add more compost or manure to make the soil more acidic. To increase the pH, add pulverized limestone to the bed. Plant the seedlings at the same depth they were in the pots, about a ½ inch (1.3 cm) deep. Space them 12 to 24 inches (30 to 61 cm) apart, and in rows that are about 24 inches (61 cm) apart. For the best results, pick a cloudy day to transplant the cabbage seedlings. This will help prevent shock to the fragile plants. Add a 1-inch (2.5-cm) layer of mulch to the top of the soil. This will help keep the soil moist as the seedlings grow, protect the plants from pests, and help regulate the temperature of the soil. The ideal mulch for cabbage includes ground leaves, finely ground bark, or compost. Cabbage plants will need about 1.5 inches (3.8 cm) of water each week. If you aren't getting enough rain, water the soil enough to keep it moist as the cabbages grow. Continue watering the cabbages until the plants approach maturity. At that time, stop watering them to prevent split heads. When the cabbages start to grow new leaves and develop heads, amend the soil with fertilizer. This will happen about three weeks after transplanting, and at this time, the cabbages will need nitrogen-rich fertilizer. Good fertilizers for a cabbage patch include fish emulsions, liquid fertilizers, blood meal, and cottonseed meal.
Summary: Determine when the last frost will be. Pick the right location. Prepare the seedbed. Transplant the cabbage seedlings. Cover the soil with mulch. Keep the soil moist. Fertilize three weeks after transplanting.

First, identify which is which by checking the spindles. Find the L and R markers respectively. Use the L pedal on the bike’s left side and the R pedal on its right (which would be your left and right when seated on the bike). To attach them:  Screw each pedal onto its corresponding thread with your hands at first (turning clockwise for the right pedal and counterclockwise for the left). Then switch to a wrench to tighten them firmly into place as you near the end. If your bike has gears, raise the back tire off the ground. Turn the pedals and shift through all the gears as you do. Make sure each one shifts to the next smoothly. If they don’t, set the bike to its highest gear before making your adjustments. Locate the brake pads. Keep your eyes on these as you turn your pedals. Squeeze the brake lever and make sure that:   The brake pads make contact on the rim without interference. The brakes should rest squarely on the rim and should not rub on the tire itself when they are engaged. They do so when the brake lever is only a third of the way to making contact with the handlebar. Each pad retreats the same distance from the rim when you let go of the lever. First, make sure any gear or brake levers are in front of your handlebar, at a 45° angle between the bar and the ground. Squeeze them to make sure they’re working properly. Then set both wheels on level ground. Check the angles of both the front and back reflectors. If necessary, adjust them so they’re at least within 5 degrees of being perfectly vertical with the ground.  At this point, you should be done assembling. However, inspect your handiwork step-by-step before using your bike. Make sure that you haven’t overlooked anything or made any mistakes.
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One-sentence summary --
Attach the pedals. Give the gears a trial run. Check the brakes. Adjust the levers and reflectors.