Home FAQ What is a Star Backbore?
What is a Star Backbore? Print

Each standard backbore has a cylindrical section at the top where only the #27 reamer has passed. This cylinder is of varying lengths depending on the overall size of the backbore. (#1 has the longest cylinder, #9-12 the shortest). On Star backbores, this section is altered to be conical (tapered). Players report the following general characteristics:



Slots on each pitch are more defined with tighter center.

Slots are roomier - easier to lip pitch up or down without changing timbre or chipping attacks.

Notes will "pop" (sound like du tongue) when slurring rapidly up a chromatic scale.

Notes tend to smoothly glide together on chromatic scale.

Broadness of sound is limited in order to favor projection.

Produces broader, more blending sound, less projection.