How a Trumpet is Made
Manufacturing the mouth pipe
The general procedure is the same as for the bell
1. Drawing
A steel core bar with precise dimensions is inserted into the pipe (as in the bell manufacturing process), which is then drawn through a close-fitting exterior die. This results in a high-precision pipe with dimensions that are accurate to the micron level.

2. Bending
The pipe is filled with a soft, easily melted metal or similar substance to prevent it from losing its rounded shape. A form is then used to bend the pipe to the desired shape. Finally, the metal inside the tube is melted and poured out.
3. Ball-sizing
A steel ball with the same diameter as the inner diameter of the curved pipe (11 mm-12 mm) is passed through the pipe to precisely shape its inner diameter.

Musical Instrument Guide:Trumpet Contents
Structure
How the Instrument is Made
Choosing an Instrument
Care and Maintenance
Trivia
- Trumpeters in Bach's time alternated between instruments with a variety of ranges when performing
- The keyed trumpet-the fruit of the evolutionary process
- Famous trumpet works - Concertos, part 1
- Famous trumpet works - Concertos, part 2
- Famous trumpet works - Solos
- Is a Flugelhorn a horn? Or a trumpet?
- The highest note a trumpet can produce
- Aida trumpets for the "Grand March"
- The secret of the trumpet's traditional tone: small impurities!?