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    • About John
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    Piano Parts Duplication

    John Trefz, fifth generation in the piano business, has been hand crafting complex piano parts for decades. John has become one of the regions finest master craftsmen, duplicating hand carved and hand notched piano bridges, piano tuning pinblocks (wrest planks) and other parts of the piano that require absolute precision and perfection.

    Trefz can custom duplicate treble and bass bridges, uppernuts, pinblocks, damper guide rails, and wood action rails. Trefz has duplicated thousands of piano bridges, from spinets to concert grands. Maple piano pinblocks are cut as close as possible, including complicated or multi-piece pinblocks.

    You can count on John’s integrity, reliability and efficient service.

    Trefz is located outside Philadelphia, PA. Pinblocks and Bridges can be shipped via UPS to Trefz for duplication. Call or Email for information and pricing.

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    © 2025 John Trefz Guitars and Pianos

    202 South Ave.
    Norwood, PA 19074
    610.945.7326
    Map

    Aston 19014, Broomall 19008, Chadds Ford 19317, Concordville 19342, Drexel Hill 19026, Folsom 19033, Garnet Valley 19060, Glenolden 19036, Glen Riddle 19037, Havertown 19083, Holmes 19043, Manoa 19083, Marple 19008, Media 19065, Middletown, Morton 19070, Nether Providence, Norwood 19074, Prospect Park 19076, Radnor 19087, Ridley, Ridley Park 19078, Rose Valley 19063, Secane 19018, Springfield 19064, Swarthmore 19081, Upper Providence 19063, Wallingford 19086