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Trumpet Discussion Discuss How to Satin finish a horn in the General forums; I have been working on refurbishing a Bach 184 cornet. The instrument is around 20 yrs old and the lacquer ...
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    Pianissimo User Phil Kersh's Avatar
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    How to Satin finish a horn

    I have been working on refurbishing a Bach 184 cornet. The instrument is around 20 yrs old and the lacquer is quite worn. I've successfully stripped the lacquer and now I'm looking into either a brushed finish (using ScotchBrite) or applying a satin finish. Unfortunately, I have no idea where to start with regards to a nice satin finish.
    So now I'm turning to you. All those who want to weigh in, I'd love to hear what you have to say. And if you have any experience with refinishing a horn, then I definitely want to hear from you.
    As my project develops, I will post photos to keep interested parties updated.

    Thanks
    Mt. Vernon Bb - Monette B1/2
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    Re: How to Satin finish a horn

    Brass is a heavy metal you want to take precautions before you go and start on removing material. As for finishes consistent pressure is key to a consistent finish. Use green (SB) for a satin finish for a silk finish use white . You may if you wish also use steel wool for more polished type finishes XXX and XXXX only for this. After that you could always blacken the brass with a commercial finish or mix up your own brew to do the job.

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    Pianissimo User Phil Kersh's Avatar
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    Re: How to Satin finish a horn

    what type of approach do you recommend? Rubbing in small circular motions?
    Mt. Vernon Bb - Monette B1/2
    Monette C937
    Bach 229H C with Malone MC2 - Monette C1/2
    Schilke P5/4
    Yamaha YTR-9610 Eb/D
    Bach 184 Bb Cornet

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    Moderator Utimate User Solar Bell's Avatar
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    Re: How to Satin finish a horn

    A satin finish needs to be bead blasted, shooting plastic or another material beads under pressure at the metal to give it the satin finsh.

    It is then plated with the plating or lacquer of choice.


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    Utimate User tedh1951's Avatar
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    Re: How to Satin finish a horn

    Quote Originally Posted by Solar Bell View Post
    A satin finish needs to be bead blasted, shooting plastic or another material beads under pressure at the metal to give it the satin finsh.

    It is then plated with the plating or lacquer of choice.


    -cw-
    I too would suggest bead blasting - know anyone in the aircraft industry? Glass bead blasting is used to knock corrosion off aluminium structures, and is not very coarse, if you are careful. Plastic bead blasting is a somewhat newer technique - I reckon that you WILL need to plate or lacquer over the result. I have one trumpet that is silver plated over a finish done by Boosey and Hawkes in the mid '50s, and another that has been bead blasted, gold plated and lacquered - courtesy of Weril in Brazil, and quite recently too. Perhaps Weril's website may give you some technical clues.
    Ted
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    Re: How to Satin finish a horn

    Always sand anything like it has a grain, ( brass does) in one direction this gives the best finish.

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    Utimate User tedh1951's Avatar
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    Re: How to Satin finish a horn

    Quote Originally Posted by B View Post
    Always sand anything like it has a grain, ( brass does) in one direction this gives the best finish.
    Most metals that have been "deformed" into a shape will invariably have grain - so this is a very valid point, but if you are plastic or glass bead blasting, the grain will only expose itself if you blast through the surface. Don't allow the blaster to concentrate on one spot, it works well if you 'brush' the blasting head gently along the shape of the trumpet. You might find an electro-plating works could be able to help - and it is quick - or maybe an industrial or large commercial jeweller. Find someone very experienced in soft metal rework. Why don't you see if you can get a 'clunker horn' and give yourself (and any blaster operator) something to practice on before you commit your best instrument to an unknown process. Consider that different horns will have different alloying mixes and so hardness variations between alloys is a distinct possibility - brass is an alloy - have a care.
    Remember: The fun is in the search and the people you meet.
    Last edited by tedh1951; 05-02-2008 at 07:33 PM.
    Ted
    Harrelson Bravura
    Getzen Eterna Classic 900
    Weril EP4071 Pocket
    Getzen Eterna II 700S
    Boosey & Hawkes Regent MkII
    Boosey & Hawkes Eb Tenor Horn

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    Re: How to Satin finish a horn

    Green's Buffing and Instrument Repair - Testimonials
    i hope this can help......
    they have pictures and such....

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    Re: How to Satin finish a horn

    Hi Phil,

    Currently I am restoring an old peashooter horn, using a domestic powder cleaner applied with a toothbrush to produce a satin finish. When finished I will use a water based polyurethane clear to protect it and stop tarnishing.

    Regards, Stuart.

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    Pianissimo User Phil Kersh's Avatar
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    Re: How to Satin finish a horn

    Tell me more about this water based polyurethane clear
    Mt. Vernon Bb - Monette B1/2
    Monette C937
    Bach 229H C with Malone MC2 - Monette C1/2
    Schilke P5/4
    Yamaha YTR-9610 Eb/D
    Bach 184 Bb Cornet

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