The bamboo dragonfly is an ancient Chinese folk childrens toy. It has a T-shaped shape, with a horizontal piece like a propeller. There is a small hole in the middle, and a straight bamboo stick is inserted into it. Use both hands to twist the bamboo stick. The bamboo dragonfly will spin and fly into the sky, only to fall to the ground when the lift weakens. However, the bamboo dragonfly method we are going to learn today is a little more advanced. It has a power system. Just pull the rope to make the bamboo dragonfly fly out.
Materials and tools: Thick-skinned walnuts with a diameter of 3cm or more; bamboo chips; wooden sticks; string; utility knife; wooden clamps.
1. Prepare a wooden stick with a diameter of 0.5cm and a length of 16cm to use as a rotating shaft.
2. Use a utility knife to cut a groove about 2.5cm from the top of the rotating shaft. If the height of the walnut is high, the length of the groove from the top should be appropriately increased. Cut the top into a long strip.
3. Use a utility knife to drill two holes with a diameter larger than 0.5cm at both ends of the walnut, then drill a small hole with a diameter of about 0.5cm on the side of the walnut, and use an ear pick to hollow out the internal walnut meat.
4. Use bamboo pieces about 12cm long to make rotating leaves. Make a small hole in the middle, which can be a long strip. The top of the stick can be inserted, but it is not too tight. At both ends of the hole, cut the wood pieces into bevels. If you don't understand, you can look [here].
5. Tie the rope to the groove of the rotating shaft, pass it through the hole on the side of the walnut, and then tie it to the wooden clamp.
6. It will look like this after it is tied.
7. Insert the rotating shaft from the bottom of the walnut and through the top of the walnut.
8. Install the rotating blade, rotate the wooden stick and roll the rope onto the wooden stick.
9. Pull the wooden clamp hard to make the wooden stick rotate and drive the bamboo dragonfly.fly out.
There are two issues worthy of discussion here: one is whether the rope should be tied to the wooden stick, and the other is whether the bamboo pieces should be tightly inserted with the wooden stick. Friends, you can explore it by yourself while playing. ~
