Service: Open Mouthpiece Backbore

Every mouthpiece maker makes his own backbore reamers. While there is much debate as to the best shape to use the best scientific evidence shows that the most important parameters are the volume and the length of the throat. Use a more parabolic backbore shape to create a larger volume without shortening the throat.

We use three standard reamers:

#1-Very slightly parabolic, similar to a Bach #10 backbore.

#2-More parabolic, with larger volume similar to a Bach #24.

#3-Pronounced parabolic shape tends to lift high register, making it suitable for piccolo trumpet mouthpieces. Very large volume. Similar to a Bach #117 Backbore.

Each of our backbores can be plunged deeper into the mouthpiece, creating a larger volume with the same intonation characteristics. We use .100" steps and mark them 1.1, 1.2, etc. So, if you want a #2 backbore that is .200" deeper than standard, specify 2.2 and we'll know what to make you.