Why is curling so expensive? Can you tell me?

In our eyes, curling is just a cone carved with stones, which is nothing to be surprised about. But don't underestimate this stone sliding on the ice. Their prices are far beyond your imagination. A set of high-quality curling costs about 200,000 yuan, a total of 16, and one is about12,000 yuan. Then why is curling made of stone so valuable? Is there anything special?

The stone used for curling is very demanding. You know, ordinary stones can't stand frequent low-temperature collisions, so it is very rare to be used as raw materials for curling. At present, it is mainly from Craigslist Island in Alsace, Scotland and North Wales. Judging from the granite here, this glacial lake has a history of more than 200 years, mainly because the granite particles here are very fine and do not contain mica, which is very suitable for curling. After testing, its impact resistance is three times that of ordinary granite. The collected granite will be sent to a special processing factory, which can't be completed by ordinary factories. Its production technology requires craftsmen very much, so the labor cost is very large, which is one of the reasons why curling is more expensive. After all, monopoly is the best way to gain benefits.

First, cut the required size of curling on the slate to make the fur of curling body, and then drill a round hole with a diameter of 16 mm in the center of the stone with a machine. This is the handle for curling. Now that the simplest work has been completed, you need to carve the stone into the shape of a curling stone with a blade equipped with a diamond cutter. Because it can't be molded at one time, it can only be carved in half. The carved curling stone will be chiseled into a circular depression at the bottom of the lake, and a special granite fuel stone will be placed inside. This fuel stone is very wear-resistant and can prolong the service life of curling.

Curling rings protruding outward about one centimeter are engraved on the upper and lower sides of the curling stone, mainly to reduce the contact surface between curling and the ice surface, and polish with friction value to reduce the friction area and friction force of curling, so that curling can slide further. At the same time, the side of the curling stone should be sandblasted with tiny glass beads, so that tiny holes can be generated on the side of the curling stone, which can disperse the impact force borne by curling during collision. Then, the finished curling is rubbed on coarse sandpaper, which can make curling have a certain grip on smooth ice. Finally, the handle is installed for crimping, thus making a crimping with a weight of about 40 kg.