1, sand with sandpaper. Roll sandpaper into a tube, put it on the bamboo pole, and then pull it back and forth hard, and the bamboo pole will gradually become thinner. It should be noted that this method will make the surface of bamboo poles rough and need to be polished later.

2. Scrape or cut with a knife. Fix the bamboo pole in a stable position, and then cut off a part of the surface of the bamboo pole back and forth with a knife or cutting knife until it reaches the desired thickness. It should be noted that this method requires skill and patience to avoid excessive cutting or uneven blades.

3. Cook in hot water. Boil the bamboo pole in hot water until it becomes soft, and then bend it hard. Bamboo poles can be thinned when they are cold. It should be noted that this method is only suitable for thin bamboo poles, and the cooking time should be controlled to prevent the bamboo poles from becoming too soft and breaking.