1. Find an abandoned canned beverage barrel (such as 1.25 liter coke bottle), cut off the lid neatly, and cut the wax into the barrel.
2. Put the bucket into hot water and stir the wax inside to melt it all. It is best to use boiled water. But you can ask your parents for help, or you can complete this step under their supervision.
3. Pour the molten liquid into a beautiful container (for example, put it into a heart-shaped chocolate box). Don't pour too much. As for the reason, look down. Of course, you have to put the thread as the candle core in the container first.
4. The initial idea of wax cooling, A poured the molten colored crayon liquid into it according to the surface painting method (colored crayons came in handy at this time). In this way, different colors of wax are added layer by layer, and beautiful candles are made.
2. Self-made solar cooker Find a concave reflective bowl on a big flashlight and cut a cylinder about 4 cm long with rigid foam plastic or wood. The diameter is just enough to fit into the round hole of the reflective bowl. Drill a fine hole horizontally at one end of the cylinder, insert an iron wire with a diameter equivalent to the aperture, and then bend both ends of the iron wire exposed outside the cylinder to 90 degrees, leaving 5 cm each. Insert the cylinder into the round hole of the reflective bowl, and then insert both ends of the iron wire on the foam plastic or wooden bottom plate. Sharpen both ends of a thin bamboo stick, insert one end into the cylinder in the center of the reflective bowl, and insert a small piece of potato at the other end. Put the equipment in the sun, so that the reflective bowl faces the sun. Then, adjust the length of the bamboo stick patiently, so that the inserted potato is just in the luminous focus. Soon, potatoes will be cooked by the sun and smell delicious.
3. The specific manufacturing method of homemade flashlight is: lift an old pop can (such as Lulu beverage can), and beat the depression with a round hammer at the other end. Roll up two 1 batteries with thick corrugated cardboard, and put them in a can with the positive pole facing up and the negative pole facing down. Find a suitable plastic cover (for example, the magic roll cover can just be buckled on Lulu's beverage can), and dig a round hole in the center of the cover, the size of which is suitable for the light bulb to be inserted tightly. Insert the bulb base into the small hole. Take a section of tracing wire, peel off the wire skin at both ends, wrap one end around the lamp holder, and tie a small hole at the other end from the side of the plastic cover. Put the plastic cover on the can. Check whether the bulb and battery are in close contact. Disposable flashlights will be ready here. When in use, press the wire on the side wall with your thumb on the unpainted weld of the can, and the flashlight will glow, and the flashlight will go out when your thumb jumps off the wire, which is very convenient to use.