As you can well imagine, any piece of equipment that you spit through on a daily basis is probably going to get a bit disgusting after a while. So every few months, its a good idea to give your brass instrument a bath. This washes out any dirt and gunk and also prevents build-ups that can cause damage later on.
But how does one give a trumpet a bath, I hear you cry?!
Well read on!
Step 1: Run a lukewarm bath with a little washing-up liquid as a detergent. DO NOT use hot water as this can strip the lacquer. Lay an old towel on the bottom of the tub to prevent scratching.
Step 2: Set up a clean and dust-free surface to arrange the parts of the instrument. I have used a puppy-training pad as they are quite absorbent!
Step 3: Remove the slides from the trumpet. Each valve has its own slide; make sure you hold the relevant valve as you remove its slide.
IF A SLIDE WON’T MOVE THEN PLEASE DON’T FORCE IT. BRING IT TO ME!
(The 3rd valve slide sometimes has a retaining screw to stop it from flying off during a performance. Remove this too)
Step 4: Remove the valves using the screw-on caps at the top and bottom of each valve casing.
Step 5: (optional) If you want to thoroughly wash the slides, remove the water keys using the appropriate screw. WARNING: Putting the springs back in is not for the faint of heart!
Step 6: (optional) Similarly, if you want to submerge the valves as well, dissemble them by unscrewing the button at the top. Again, these are tricky to reassemble, so unless you’re completely confident, leave them for now.
Step 7: Submerge the relevant parts for an hour or so, to let them soak.
Step 8: Using APPROPRIATELY-SIZED brushes, swab the parts of the trumpet until no more dirt can be removed.
Step 9: If any part of the instrument is visibly tarnished, use a dollop of Brasso on a soft cloth (or kitchen towel) and polish it until it is shiny once again. Make sure that you then rinse it to remove any traces of the polish.
Step 10: When the parts are dry, you can begin to reassemble the instrument. Use plenty of valve oil to fit the valves and the 1st and 3rd slides and a thicker oil (or Vaseline) for the 2nd slide and the Tuning slide.
Step 11: Finally, using a standard furniture polish, shine up the outside of the trumpet. You may need sunglasses!