Brass Tech - Brass Toff Instrument Repair

Technical Analysis of Euphonium Valve Obstruction and Repair

Leave a Comment / Euphonium / Russ Marsh / February 27, 2026

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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EuphoniumBrass Band, Brass Instrument Maintenance, Brass Mechanics, brass repair, Brass Tech, Brass Toff, British Brass Band, Clean Your Horn, Compensating Euphonium, Euphonium And Tuba, Euphonium Player, Euphonium repair, Low Brass Repair, Paul Andrews, Valve Oil

Cornet Valve Block Corrosion & Mechanical Repair Analysis

Leave a Comment / Cornet / Russ Marsh / February 23, 2026

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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CornetBrass Band, brass instrument repair, Brass Tech, Brass Toff, Clean Your Cornet, Cornet Life, Cornet Love, Cornet Player, Cornet Repair, Cornet Solist, Elliott Brass UK, Paul Andrews, Schilke, Soprano Cornet