Paul Andrews

Technical Analysis of Euphonium Valve Obstruction and Repair

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A compensating euphonium was submitted to our Lowton workshop for diagnostic evaluation. Clients from Bury reported a significant increase in back-pressure and inconsistent pitch in the lower register. Initial mechanical testing indicated that the auxiliary compensating loops were obstructed by physical debris, preventing the necessary laminar flow required for accurate note production. Upon disassembly of […]

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Tenor Horn Repair: Technical Analysis of Brass Maintenance

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The internal bores of a tenor horn accumulate calcification and organic residue over periods of use, which restricts the laminar flow of air and increases acoustic impedance. At our workshop in Lowton, we utilize ultrasonic cleaning and mechanical swabbing to remove these deposits without compromising the integrity of the yellow brass or silver plating. Removing

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Cornet Valve Block Corrosion & Mechanical Repair Analysis

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A Schilke Soprano cornet underwent assessment at our Lowton workshop, revealing advanced electrolytic corrosion on the valve block casing. Analysis indicates that high-acidity dermal contact has compromised the silver substrate, leading to dezincification of the underlying brass. This structural degradation necessitates mechanical intervention to prevent further loss of material integrity. We regularly see similar chemical

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Mechanical Restoration and Technical Repair of the Bb Baritone

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The internal maintenance of a baritone requires precise intervention to remove accumulated calcium carbonate and organic residue, which often occurs at a higher rate than in a standard euphonium. Over time, these deposits constrict the internal bore, altering the acoustics and increasing air resistance. At our workshop in Lowton, we utilize ultrasonic cleaning and chemical

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Technical Maintenance and Chemical Cleaning of Brass Instruments in Lowton

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Periodic maintenance on a Yamaha flugel horn is required to mitigate the accumulation of calcified deposits and lubricant oxidation. At our Lowton facility, serving Salford, we analyze the internal bore for obstructions that disrupt laminar airflow. Over a 24-month period, the combination of saliva-borne minerals and synthetic lubricants creates a viscous sludge that adheres to

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