How to fix Trumpet dents for free

Discussion in 'Trumpet Repair and Modification' started by Diemond, Oct 24, 2010.

  1. Brekelefuw

    Brekelefuw Fortissimo User

    Mar 21, 2006
    Dents are removed via mandrels, burnishers, hammers and dent machines.
    Magnetic dent removal doesn't work on trumpets because the size of tubing is too small, and small dent balls don't have very much magnetism. MDRS is only good for low brass and saxes.
  2. turtlejimmy

    turtlejimmy Utimate User

    Jun 6, 2010
    The cost of dent removal for the Severinsen--one on the bell, and a few more than negligible ones on smaller tubing--is $40.

  3. Ed Lee

    Ed Lee Utimate User

    Aug 16, 2009
    Jackson NC
    Yes, I believe the OP refererred to a minor dent in the bell. Personally, I acquired a student quality trombone where the previous owner had a stuck mouthpiece and closed his case thus putting about a three by two inch dent in the bell. The bell shaped mandrel was set in a vise, greased and then the tech applied a greased roller with pressure. In less than ten minutes the dent was gone to the visual eye. Of course, he also pulled the mouthpiece. Days later that trombone was on its way to New Orleans Public Schools.

    Yes, come lately, there is a magnetic machine system being used to pull out some dents, mostly in the tubing.

    Yes, mandrels are used both to shape the bell in manufacturing and in repair. I'm waiting for the very hot hydraulic stretching press to make a seamless bell with a bulbed / thickened rim, a variant of casting.
  4. oldlou

    oldlou Forte User

    Aug 28, 2005
    Grand Rapids, Mi.
    If the important part is the free determinant, being a very good looking and friendly college teen girl with an old student grade Holton trumpet that obviously had made its share of impacts with the edge of a music stand, that young lady needs to be seated next to an advanced senior citizen like me in the trumpet section of a concert band. I worked my way through college rubbing those kind of dents out of junior high students horns. I loaned her one of my Reynolds Medalist trumpets and took hers home. It took me about two hours to make that old Holton look nearly new. Did I charge for that work, NO. Now, a couple of the young guys in the trumpet and trombone sections are making sure that I am aware of the dents and dings on their horns. I will probably iron out those horns gratis as well. Geeze, I wish that they were also pretty girls too.

  5. ComeBackKid

    ComeBackKid Fortissimo User

    May 11, 2009
    Yorba Linda, CA
    Hey, Lou - I've heard a lot of pickup lines before but this has to be the best one yet! ("Hello there - would you like me to rub out a few of your dents?";-) )
  6. oldlou

    oldlou Forte User

    Aug 28, 2005
    Grand Rapids, Mi.

    Not 'quite' a pickup line. I am very much aware of my 74 long and hard years on this planet, compared to her 19 or 20. I know better than to try to come on to a college sophmore. I just felt like doing something nice for someone.


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