CAUT

  • 1.  grand pedal badly worn

    Registered Piano Technician
    Posted 07-12-2023 17:03

    Hi fellow college and university techs,

    A Mason BB I take care of has a damper pedal with a hole worn right through it (see picture). It is actually playable at the moment, but when the remaining piece at the tip breaks (any day now)  there will be jagged edges sticking out. Is it feasible to repair this pedal, maybe by having someone weld on additional material? Has anyone tried this kind of repair? Schaff does not seem to carry an exact replacement, which is one reason to try to keep it in service. On the other hand, finding a replacement may be less trouble than hiring someone to do a specialized repair. 

    Thanks,

    Ben Webster

    UNM-Albuquerque



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    Benjamin Webster RPT
    Albuquerque NM
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  • 2.  RE: grand pedal badly worn

    Registered Piano Technician
    Posted 07-12-2023 17:16
    In addition to be being worn through, it looks like it's bent, too. 

    My recommendation is to find a set of pedals that are close to these and modify the box to make them fit. 





  • 3.  RE: grand pedal badly worn

    Registered Piano Technician
    Posted 07-12-2023 20:10
    My husband is a welder/ sculptor. He has done such a repair successfully. Putting the pedal on a surface so the hot brazing rod doesn't fall through; use nickel rod first as it bonds to cast metal better; cover that with bronze rod; grind, polish, shape. You're basically using the oxy-asceteline torch to soften the rod and draw/weave with it. It is unlikely you'll find someone to do that. The repair is still in service 25 years later.

    The casting companies are also unlikely to take on such a job. Perhaps Supply88? though that is a big piece.
    Nancy Salmon, RPT
    LaVale, MD 21502






  • 4.  RE: grand pedal badly worn

    Registered Piano Technician
    Posted 07-13-2023 11:39
    A welder should be able to braze some brass on, probably starting underneath and then adding to the top. With the extra brass in place, it can be filed to shape. 
    Regards,
    Fred Sturm
    http://fredsturm.net
    www.artoftuning.com
    "One's real life is so often the life that one does not lead" (Oscar Wilde)






  • 5.  RE: grand pedal badly worn

    Registered Piano Technician
    Posted 07-13-2023 16:25

    Thanks for your responses. I don't think the pedal is bent, I think it's just how it sits on a flat surface that makes it look that way. 

    It sounds like a welding repair can be done if I can find the right person. I'll do a little research in that direction. If I can't find someone to do it for a reasonable price, then I'll order a new set of pedals, and modify the box as needed to make them work .Luckily, the box is a big, overbuilt Mason and Hamlin part that can stand some nipping and tucking. 

    Best regards,

    Ben



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    Benjamin Webster RPT
    Albuquerque NM
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  • 6.  RE: grand pedal badly worn

    Registered Piano Technician
    Posted 08-20-2023 00:12

    Thought I'd post the outcome in case anyone is interested. I have no access to welding gear and no experience, so I ended up finding a welder via my school's physical plant department. He brazed the pedal with something called Quicksilver, a phosphorous-copper alloy. In my opinion he did a very nice job. He not only filled the hole, but built the metal back up to its original profile. The filler is a different color, but this is a practice room piano so that's not an issue. The cost was about $150, more than a new set of pedals would cost, but it saved me the work of modifying the box. The best part is that I now know a good, affordable welder.

    Thank you all again for your input.



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    Benjamin Webster RPT
    Albuquerque NM
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  • 7.  RE: grand pedal badly worn

    Registered Piano Technician
    Posted 08-22-2023 23:21

    What an amazing solution sir!! Great job



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    Kevin Fortenberry
    Registered Piano Technician
    Longview, TX 75602
    806-778-3962
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