This tree is as hard as steel. It is said to be bulletproof. It is an excellent material for making a cooking board. There are not many of them nowadays.

There are thousands of different kinds of trees in our country. In addition to the common ones on the roadside in the countryside, there are many rare trees hidden in the deep mountains. In China's Guangxi, Yunnan and other places to produce "hardwood", that is, wood is very hard trees, of which the representative is mahogany, red sandalwood and other trees, they are very well-known high-grade wood, mainly used to make furniture. The hardwood we are going to talk about today is not as famous as mahogany and red sandalwood, but its use is more approachable and it is an excellent material for cutting boards. In the countryside, whose family has such a cutting board, neighbors will envy him. So what kind of tree is this kind of tree?

The name of this kind of tree is very special, called "clam". Because its ring is wide on one side and narrow on the other, it is very much like the grain on the shell, so people call it clam. In fact, clam is a kind of iron wood, the wood material is very dense, thick, it is said that it can sink into the water. Clam wood is as hard as steel, it is very difficult to cut down a kind of tree, it is also difficult to process, it is necessary to use special tools to cut down iron wood. Clam is known to be bulletproof in the folk. If you hit its cross section, you can hear a sound similar to hitting metal. Someone tried to drive a nail into it, but it didn't go in.

Why is clam so hard? In addition to its own relatively dense texture, it is also related to its growing environment. Because clam likes to grow on limestone slopes, its roots absorb a large amount of limestone minerals, which accumulate on the tree trunk, making the already dense clam harder. In addition, the growth rate of clam is so slow that it is difficult to grow into wood. It often takes a hundred years for a good clam to grow into wood. The longer it grows, the harder the wood will be. The oldest known clam has a history of 2300 years, with a height of less than 50 meters and a diameter of more than 4 meters. It is located in Longzhou County, Guangxi.

Clam wood has beautiful texture, corrosion and water resistance, good insect resistance, high toughness and low water permeability. it is used for making mechanical cushion wood, axle and manual planer, but people prefer to use it as a vegetable board. In general, wooden boards are easy to mud, especially when chopping meat stuffing, it feels very unhygienic, while clam boards do not have this problem. They do not mud and are very clean, so you can safely cut vegetables and chop meat stuffing. Clam is very heavy, and its board is much heavier than other boards made of wood, but there are not many now.

Because with the development of the value of clam, it has been cut down a lot over the past 30 years, but now it is not much, and it has been listed as a second-class protected plant in the country, so even if clam is found in the wild, it cannot be cut down.