Detail 01
Trueing tool
Works a bent or oval shank back toward round so the mouthpiece seats fully in the receiver.
Product detailSKU #1274423038620
DEGMouthpiece Trueing Tool
Sale
Independent shopping perspective
The Korena take
A bench tool for working a knocked-out-of-round mouthpiece shank back toward true. For repair techs and band directors, not for everyday playing use.
Strong match
Who this is for
- Band directors facing a shelf of dented student mouthpieces
- Techs wanting a quick in-house fix instead of sending work out
- Anyone maintaining a school or rental instrument inventory
Consider the trade-offs
When to look elsewhere
- Players who own one mouthpiece in good condition
- Badly crushed or cracked pieces that need real repair work
- Anyone hoping to improve tone; this restores fit, not sound
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Shop tool, not a playing accessory
It lives in a toolbox. Nothing about it affects a session — it fixes hardware between sessions.
Detail 03
Single purpose
Corrects shank shape only. Rim dents, worn plating and bore damage are separate jobs needing separate tools.
Detail 04
Around $21
Close to a single bench charge at a shop, so it pays for itself on the first mouthpiece saved.
Detail 05
Fit versus tone
A shank that does not seat causes air leaks and rattles. Truing solves that, not response or timbre.
Final check
Know before you order
- 01Check the tool against the shank size you actually work on before ordering
- 02Sold alone — no case, no reamer, no polishing supplies
- 03Overworking a shank thins the metal; go slowly and test the fit often
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this free a stuck mouthpiece?
No. A stuck mouthpiece needs a puller. This reshapes a shank that is already out, so it seats cleanly the next time it goes in.
02Do I need repair experience to use it?
Light truing is manageable with care and frequent fit checks. Heavy deformation, cracks or plating loss are still a technician's job.
03Will it change how the mouthpiece plays?
Only indirectly. A shank seating fully removes leaks and rattles. The cup, rim and throat stay exactly as they were.
04Is it worth buying for one mouthpiece?
Marginal. At this price it makes sense when you look after several instruments or run a program. For a single horn, a shop visit is simpler.
