The instrument that arrived at the Elliott Brass workshop was perhaps one of the most structurally compromised brass instruments we have encountered recently: a Besson Sovereign EEb Bass. This powerhouse of the low brass section had clearly endured severe neglect, manifesting in advanced external pitting and heavy corrosion across the entire surface. The initial assessment confirmed what the visual damage suggested: this was not a standard service job, but a complete reconstruction project. The heavy-gauge brass body required significant structural reinforcement just to handle the forces needed for the subsequent repairs, necessitating us to temporarily reinforce the main workbench before commencing work.
Our primary focus immediately shifted to addressing the extensive physical trauma. The instrument was covered in deeply set dents and distortions, many of which had hardened the brass walls, making meticulous panel beating and dent removal a delicate but forceful affair. Working on an EEb Tuba of this calibre means managing vast surface areas and heavy components. Specialist tools and precise calibration were crucial to return the bell and primary body sections to their original profile, ensuring the integrity of the air column remained uncompromised despite the previous impacts. Every effort was made to retain the original character while erasing the signs of prolonged abuse.
The most critical technical hurdle was the near-total seizure of the main tuning slides. The extent of the internal oxidation and corrosion had, over years, created a fusion—what we often term ‘welded by time.’ Separating these vital components required careful, controlled application of heat, specialized chemical treatments to break down the verdigris bonds, and gradual mechanical extraction. Rushing this step risks catastrophic damage to the slide tubes or casings. Paul’s meticulous approach ensured the stubborn slides were liberated one millimeter at a time, preventing warping or breakage, allowing the instrument’s essential tuning mechanism to move freely once more.
Following the structural and mechanical rehabilitation, the instrument underwent an intensive deep-clean process to eradicate the internal ‘rot’—heavy mineral deposits, calcification, and internal oxidation that severely restricts air flow and dulls the tone. This required extensive chemical immersion and flushing, targeting every internal passage. Once thoroughly cleaned and sterilised, the Sovereign EEb Bass received a detailed polish. The transformation was dramatic: the pitted, dull brass was brought back to life, and the previously immovable tuning slides now glide with perfect resistance, ready for performance under demanding conditions.
This Besson Sovereign EEb Bass project was a testament to the fact that almost no instrument is beyond saving, no matter how severe the condition. The transition from a corroded, dented heavyweight to a resonant, functional musical tool was complete. If you own a brass instrument that looks like it has been neglected for decades or contains slides that defy all attempts at movement, Elliott Brass welcomes the challenge. We specialise in turning seemingly impossible repair jobs into triumphant restorations, ensuring your heavy metal is ready to rumble again. Contact us to discuss your extreme repair needs.
View this product: EEb Bass Tuba Details