Will I be able to remove dents in smaller instruments such as trumpets or trombone hand slides?

No you will not, as the magnet is only strong enough to lift up dents when using a 1.0″ or larger metal sphere inside the instrument. The magnets strength is dependent upon the surface area of the metal ball it’s drawn to while removing dents. Another factor is as the tubing gets smaller in diameter there is an increase in surface radius making the tubing much stronger. So a metal ball 1/2″ in diameter does not provide enough surface area to be effective on a tube that is physically stronger. However we are working with spherical magnets to test their effectiveness on instruments like flugelhorns and trombone main tuning slides.

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