Karl Hachenberg
1 Article by Karl Hachenberg
Brass Bulletin 54 - 2 / 1986
Hachenberg, Karl
Points and areas of corrosion in brass instruments
Red spots on brass instruments were often blamed on players and poor maintenance, yet the causes of premature corrosion may lie in manufacturing and surface treatments.
pp. 99–102
Brass Bulletin No 54 · 1986
Equipment· Research· Instrument making