Trumpet Factory Tour 2

Hammering

Spinning

Bending

Marking

Hammering
In this traditional procedure, a fan-shaped piece of brass with a thickness of approximately 0.5 mm is slowly and carefully formed into a pipe, and its seam is welded shut. A skilled worker then hammers the pipe to form a bell shape. This one-piece bell used for high-end Custom and pro models trumpets.

Spinning
In this step, a mandrel and the bell are spun while using a tool to conform the bell onto the mandrel and constrict the narrow end of the bell. This task is very difficult and labor intensive. Like hammering, bell spinning must be carefully performed by skilled workers.

Bending
To prevent the bell stem from losing its roundness when bent, a soft metal that melts easily is packed inside it. Next a form is used to bend the pipe into a U shape. Lastly the packed metal is melted and removed.

Marking
Finally the Yamaha logo is applied. The logo is applied precisely using a computer controlled engraver.

Brass

Brass is an alloy usually consisting of approximately 70 percent copper and 30 percent zinc.

	Hammering In this traditional procedure, a fan-shaped piece of brass with a thickness of approximately 0.5 mm is slowly and carefully formed into a pipe, and its seam is welded shut. A skilled worker then hammers the pipe to form a bell shape. This one-piece bell used for high-end Custom and pro models trumpets.
Spinning In this step, a mandrel and the bell are spun while using a tool to conform the bell onto the mandrel and constrict the narrow end of the bell. This task is very difficult and labor intensive. Like hammering, bell spinning must be carefully performed by skilled workers.
Bending To prevent the bell stem from losing its roundness when bent, a soft metal that melts easily is packed inside it. Next a form is used to bend the pipe into a U shape. Lastly the packed metal is melted and removed.
	Marking Finally the Yamaha logo is applied. The logo is applied precisely using a computer controlled engraver.

	Brass
	Brass is an alloy usually consisting of approximately 70 percent copper and 30 percent zinc.