---
url: 'https://kalasudha.com/en-int/faq/instruments-artforms/what-is-a-soundpost-and-why-is-it-not-glued'
title: 'What is a soundpost, and why is it not glued?'
author:
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  url: 'https://kalasudha.com/en-int/user/0f961cccc99524ed'
date: '2026-10-19T18:58:32+00:00'
type: website
summary: "A violin's soundpost is a spruce cylinder wedged between top and back under the bridge's treble foot, held by tension rather than glue."
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  [  Help ](/en-int/help)     What is a soundpost, and why is it not glued?  

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# What is a soundpost, and why is it not glued?

 Updated 19 October 2026

 The soundpost is a small cylinder of spruce wedged inside a **[violin](/instrument/violin)** between the top and back plates, under the treble foot of the bridge. It is fitted under tension so it stands without glue. It carries string vibration from the top to the back and supports the top against string tension, and UNSW research shows its position changes the stiffness at the bridge feet.



 

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