The trombone is one of the more forgiving brass instruments when it comes to maintenance — but the slide is the one area that needs real attention. A smooth, fast slide is everything on trombone, and it only stays that way with consistent care.
Slide Care
The trombone slide is a precision instrument within an instrument. Even a small dent or bend in the inner slide can make it stick or move unevenly. Keep it clean and lubricated, and handle it carefully.
For lubrication, spray the inner slide tubes with water and apply a thin coat of slide cream or oil — whatever product you prefer. Wipe the inner slide tubes clean with a soft cloth before applying lubricant to remove any old residue or grit. A well-lubricated slide should glide effortlessly through all seven positions.
F Attachment Care
If your trombone has an F attachment (a rotary valve triggered by a thumb lever), it needs regular oiling with rotor oil, just like a French horn. The trigger and linkage mechanism should also be kept lightly lubricated. A sluggish trigger is almost always a sign that it needs oil.
Emptying Condensation
Open the water keys regularly during playing to empty condensation from the main slide section and the bell section. After playing, remove the slide and let it drain completely before storing.
Regular Cleaning
Clean the inner and outer slides with a slide cleaning rod and cloth every few weeks, and do a full bath a few times a year. When cleaning, handle the inner slide with care — avoid laying it on hard surfaces where it could pick up dents. Even a tiny dent in the inner slide is enough to affect its action.