open share


sakamoto factory
cherryboy function

坂本製作所 ×
Cherryboy Function

sakamoto metal

Metallic inserts (components into which screws are inserted) are made by drilling holes into metal pieces. The grinding sounds of the drills and the various noises of the machinery are taken by Cherryboy Function and mixed with the Detroit style of his roots to create a top quality groove which can serve as an excellent soundtrack to the city.

  • Metallic inserts are parts in which screws are inserted. These anchors are often embedded in plastic moldings. In order for a screw to fit properly, a hole is drilled in each piece. The pieces and their accompanying components are manufactured at this factory.

  • The production process begins with 2 to 25 millimeter metal rods. Various materials are used including metals such as brass, iron, stainless steel, copper and other materials like resin. Indentations are made on the surface of the rods so the plastic will adhere firmly to the metal.

  • The metal rods are fed into the machine, at which point both the inner and outer surfaces are carved. A drill is used to hollow out the inside, but rather than spinning the drill bit itself, the rod is spun so that the outside surface can be completed simultaneously.

  • In the section hollowed out by the drill, a spiral shaped blade is used to carve a groove that will allow a screw to fit perfectly into the hole.

  • The finished product embedded in a plastic mold. This piece contains three separate metallic inserts. These pieces can be connected with screws.


sakamoto factory

Sakamoto Factory Ltd.

Sakamoto Factory is in the Gotanda area of Tokyo. It’s main focus is on metallic inserts used in plastic molding and other products most of us don’t notice. Most of their manufacturing process is still analog. Much of their work is custom-made, and available in different sizes. They are able to accommodate sudden and same-day orders. Their metal parts are made of BSBS, iron, stainless steel, aluminum, and resin.


track maker

Cherryboy Function

Cherryboy Function first came to fame in various underground dance festivals and clubs in the 2000’s. In 2010, his 80-minute performance at DOMMUNE became a topic of much attention. He continues to do remix work for both major and minor artists. His 2016 album Word in the Petals influenced up and coming artists such as tofubeats and DORIAN, receiving praise as one of the best Japanese techno track makers.



who made this

Naoya Tokunou

music mastering

Born in 1979 in Abashiri, Hokkaido. Began his career in 1999 as an engineer in Setagaya’s Heartbeat recording studio. Freelance from 2009. Currently based in Kyoto, working with various artists doing live PA work, recording, mixing, and mastering.

Keisuke Inoue


Born in 1987 in Kobe. Attended Nihon University. Graduated with a major in photography. Joined Amana Inc. in 2011. Freelance since 2014.


Ryosuke Sone

video director

Attended Tama Art University and graduated with a major in graphic design. Working as a director/designer/planner.

Bushitsu Inc.

photo production

Web and video production company. The two founders who claim they had the most fun during their after school activity days, recreated the atmosphere of an after school club in the form of a company, where people with a common goal naturally gather. The company mascot is the animated character Emiru chan who is also the club PR manager.