Doc wrote: ↑Wed Sep 30, 2020 9:11 amI was hoping you might discuss, in great detail, the tedious prep work required for silver-plating a tuba.
- Doc
It's not complicated, but extensive:
The instrument (with silver on it) is going to look JUST LIKE the instrument WITHOUT silver on it.
Any square inch - that cosmetically sucks - will still suck - except that its suckiness will be ensconced in silver.
Every solder joint (rather than just "air tight") must be filled up to the very top edge, because plating chemical can seep into any little (even if only .001" wide) "cave", leach back out, and etch the instrument later.
In particular (as with your tuba, Bill), silver plating a tuba with kranz is really risky, because the top edge is only in place via being folded down into place (no solder), and - as that leaves and epic chance for plating chemical to find it's way in-between the kranz and the bell, it also offers a very high chance of that chemical leaching back out and etching the (nearly always) BRIGHT-silver bell interior...
...An alternate tack (when plating a tuba with a kranz...though not necessary when a bell is in perfect/like-new/undamaged condition) is to solder down the folded-over tab (all the way around the kranz against the bell interior), but I did not choose to do this with your instrument. Rather I just (after straightening out that bell) worked it down to a very tight fit.
bloke "Now, am I done, here...??"