Tubist of Time wrote:
Firstly, the valves. They are stainless steel pistons as well as a 5th rotor. How should I go about cleaning each? I have heard of soaking them in vinegar as well as some other things.
Vinegar works great. I use it to clean my tubas about every 5 or 6 months(usually around Christmas time) between annual professional cleanings.
Vinegar is a mild acid and will eat away at the gunk that has built up on the valves and in the slides without harming either.
Here's how I have done it:
Fill the slides up with vinegar and put them in some kind of container that will allow them to sit upright. A dish rack works well although anything that will hold them up without tipping over will do.
Take the valves totally apart...do not expose the felts and corks to water or vinegar. Simply put them in a safe, out of the way place to reuse later(unless you need to replace them).
Leave the 5th valve in the horn. It's a pain to take out and chances are (especially if you've never done it before) you'll damage something. It's up to you if you want to disconnect the linkage or not. If you do, beware that the thumb paddle is spring loaded and can swing around and dent any valve tubing in the area if you aren't holding on to it. Leaving the linkage on it fine too, but make sure it's very dry and that you oil it after the cleaning.
Next, the actual horn. The universal solution that keeps coming up is running lukewarm water through the horn. When you do this, should you press the valves down to let the water through different parts of the tubing, or just let it flow through the main tubing? I have also heard of filling the horn up with vinegar. (apparently, lots of people trust their instrument care to vinegar) What are the advantages to this, if any, and what is the proper way to do this?
Before you do anyting with the horn in the bathtub, make sure you pad up the bottom of the tub with old towels. The horn will slide a bit as it fills with water, so watch that too. Make sure you use lukewarm water and not hot water so that you don't risk burning lacquer off. You can use dishwashing soap if you want to, but make sure you get it all out and beware that it makes the horn really slippery. Also, soap can get under the lacquer if your lacquer is badly scratched or missing from sections, so consider that before you try it.
Filling the horn up with vinegar is a pain and takes A LOT of vinegar. I believe Doc does this though, so pm him if it strikes your fancy.
During the cleaning of the horn, the valves and slides should be out.
Also, I have heard that running a trombone snake through the leadpipe is helpful. It may just be me, but if you had particles built up in the leadpipe and you brushed them off, wouldn't they just get swept further into the horn?
You should snake your leadpipe out on a regular basis. Crap does build up in your leadpipe no matter how careful and how "clean" you think you are. Don't worry about stuff getting way into the horn...it will all come out into the first valve or out the receiver (depending on which way you snake it), and since you have the valves out and the horn in the tub anyway, it's not a big deal.
In summary, I'm just looking for the most practical way to clean the instrument and all its mechanisms without messing anything up.
You shouldn't hurt anything with "my" method. Just be very careful and watch things carefully. If you don't feel confident about this, don't do it and risk damaging something.
I'd also suggest that you spring for an annual chemical or ultra sonic cleaning on top of doing home-brew cleanings every now and then.
Oh...go through the Brasswind or Dillon Music site and order a "Brass Saver" for tuba, which is a set of tuba sized snakes and swabs. Pretty handy to have around and they work better than the regular old trombone ones.