Where did the materials for cosine items grow and what kind of wood do you use?

The "tree" used in cosine products is
4 types with different growing places, different characteristics and expressions

Cosine mainly uses four types of trees: maple, walnut, oak, and cherry. In particular, maple, which is smooth and bright like silk, is a representative material of Cosine.
The maple and walnut are from North America, and the oak and cherry trees are all grown in Hokkaido. Each has different characteristics and expressions such as wood grain, color, hardness, and weight.

See where you grew up on the world map!

Where do cosine trees grow?

What are the characteristics of each?


Origin: Quebec, Canada | Classification: Maple family

There may be a lot of people who come to a pin with a leaf and maple syrup drawn on the Canadian flag.
It is characterized by a very hard, white and glossy bark. In addition to furniture, it is resistant to impact and is used for bowling lanes, musical instruments, and exercise equipment. Characteristic heather, such as bird's eye heather and fiddleback heather, is used as a surface material for musical instruments and siding boards for houses, taking advantage of its beauty.


Origin: Midwest North America | Classification: Walnut family

It is one of the world's most prized woods, along with mahogany and teak. Speaking of the walnut tree, I think that you can feel familiar. Due to its heavy texture, it has been popular as a furniture material in Europe since the Renaissance. In the wild west, it was believed that hammering iron into the material would darken the color of the material.


Origin: All over Hokkaido, Japan | Classification: Fagaceae

The acorn tree oak has been revered as the "King of the Forest" for its majestic shape and vitality. Because it is a slow-growing broad-leaved tree, it is most valuable wood that is over 150 years old for use as furniture material. One of the characteristics of Japanese oak wood is the unique tiger-striped pattern called “Torafu”. It has excellent properties and has been used extensively for construction, furniture, ship materials, etc. since ancient times. In addition, the tannins and polyphenols contained in the material melt into alcohol and create a rich aroma, so it is also used for aging barrels for whiskey and wine. In addition to Russia, we also use oak wood from Hokkaido.


Origin: All over Hokkaido, Japan | Category: Rosaceae

We use "Yamazakura" from Hokkaido. The material is tenacious and strong, easy to cut, and has little warpage. The tree grows to a diameter of about 1 m at chest height, but today it is not possible to obtain large timbers from wild cherry trees, so there are parts where the redness and sapwood that are characteristic of cherry blossoms are clearly separated, and nature weaves it. You can enjoy the beautiful colors. The change occurs relatively quickly, and the more you use it, the more lustrous it becomes and the more it turns reddish brown.


Origin: All over Hokkaido, Japan | Classification: Oleaceae

Most of Hokkaido's octopus is of the type called yachidamo, also known as octopus. In the Ainu language, it is called pinni. In English, it is a material called Ash. It is a tree that grows to a height of 30m and a diameter of 1m. The wood grain is beautiful and uniform, and it has long been favored as a furniture material. Due to its excellent elasticity, it is often used in sports equipment. It is characterized by its clear wood grain and blue-grey color, and the longer it is used, the more it changes to a warm amber color.

If possible, I would like to make furniture out of wood cut from nearby mountains.
Just like when woodworking was born in Hokkaido.

At Cosine, we make cuckoo clocks, nest stools, and dress racks from mountain cherry trees from Hokkaido. Now that Hokkaido's wood resources, which were said to be "not available", are steadily increasing, Cosine is also working on "making furniture that protects Japanese forests" by utilizing this blessing.

Most items are available in two wood species, maple and walnut.

Most Cosine items, such as sofas, dining tables, and shoehorns, are available in two tree species: pale and lustrous maple and heavy walnut to match the atmosphere of the space.
Please enjoy the completely different texture of wood even with the same item.
In addition to maple and walnut, some items are also available in oak and cherry. This time, in addition to the two tree species, we will introduce a list of items that you can choose from oak or cherry.

Where did you grow up and which tree did you use?

Where did you grow up and which tree did you use?

Sort by

Cuckoo clock


Dress rack


Clock (color)


Nest stool


Wall clock (R)


Page Top





one gift to the world
【 Insert name 】
If you wish to engrave your name, please select the size and typeface and order it together with the product.
A size 1,320 yen including tax / B size 1,650 yen including tax



cosine Style


  • warm welcome
  • comfort
  • relaxing
  • kids
  • gift and limited
  • create by artist



  • warm welcome
  • comfort
  • relaxing
cosine YOUTUBE channnel





TEL 0166-47-0123 
FAX 0166-47-7450


東京都渋谷区神宮前2-5-4SEIZAN 外苑101
TEL 03-3470-7733 
FAX 03-6804-2611


大丸札幌店 7F リビング雑貨売場
TEL 011-231-5868(担当:奥谷)

page top