Repair of trumpets

How we repair trumpets:

* de-montage of all parts
* application of different acids to take off water stone
* lapping (if necessary)
* mechanical cleaning out/inside
* dent work, soldering, fixing slides
* ultrasonic cleaning of all mechanical parts
* spring changing (if necessary)
* felts and corks replacing
* leaking test
* pleasing the instrument

New: We are developing a fraction mandrel for Bach Stradivarius. We are working with modern scan 3D technique precise up to .001 mm.

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