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Posted: **Sun Jan 02, 2005 10:00 pm**

txtuba01 wrote:Hello everybody! I know this may sound VERY dumb, but what's a backbore? I've been shown one by means of a cutaway, but what is it for? I've heard of people drilling it out, why? What are the positives/negatives of doing this? These are quite a few questions, but it just struck me from reading a previous thread that I don't know what it is. Any info. would be very appreciated. Take care everyone!

The internal point in the mouthpiece where the cup meets the shank. The backbore is generally tapered inwards slightly compared to the rest of the shank.

Some people feel enlarging this backbore with a drill will empower them with a huge sound and cure their neglected low range.

Posted: **Sun Jan 02, 2005 11:04 pm**

tuba4sissies wrote:wouldnt the back bore be the neck of the mouthpiece that goes into tuba.

That is called the shank.

Posted: **Mon Jan 03, 2005 11:46 am**

txtuba01 wrote:what's a backbore?

The backbore is the inside of the shank. It is the tapered tunnel from the throat (the narrowest part) to where the shank opens into the instrument. The taper of it affects its characteristics to some extent, and that's why people discuss it.

Rick "providing alternative wording to Sean's already correct answer" Denney

TubeNet

What's a backbore?

Re: What's a backbore?

Re: What's a backbore?