Conn 88H Restoration: Analyzing Deformation and Tolerances in Vintage Brass Repair
The assessment of this Conn 88H trombone revealed severe plastic deformation across the bell flare and slide crook. Initial mechanical integrity checks indicated that internal bore alignment was compromised by localized impacts. Before addressing the geometry, standard procedure involved ultrasonic cleaning to eliminate internal calcification deposits and organic residue. These deposits, acting as internal friction […]
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Trombone