Grootkoper

26/09/2026

After a very, very busy period of summer holiday maintenances time for proof of life 😁. Last week I had the pleasure having a real frankentuba on the bench belonging to a valued customer. Wow… rare level of responsiveness with real sound from the old days. And ready to go again after some TLC.

30/07/2026

Job done 😁

19/06/2026

Nothing can hide when the heavy limescale layer is removed during the ultrasonic cleaning

03/05/2026

This 1 year old Wilson tuba arrived on the workbench and still looks untouched after lots of playing. Untill the inside visual inspection 😷. Showing before and after cleaning the 4th valve circuit. Good example why yearly preventive maintenance matters.

28/01/2026

Euphonium leak repair

22/12/2025

21/10/2025

Todo: getting a Conn 36K main tuning tube operational again and get it to slide out over the body instead of against…

25/09/2025

Restoration of an oldie from the Elkhart Indiana factory

30/07/2025

Looks like nothing happened 🙂

12/07/2025

Lower mouthpipe reconstruction time