On 05/04/2020 07:18, Chris Hogg wrote:

So what is wrong with using a pressure washer? It's brass, so unless
it's something particularly delicate, it won't be damaged. A pressure
washer would do quite well. Explain your intemperate outburst.



If it's fully supported, a pressure washer might be okay. If it's not
supported, a pressure washer could turn a tray into a bowl.

I suspect that, although Daniele did not say this, it's an antique of
some sort. Even if not, it may represent many hours of craftsmanship,
and he wants to find a gentle yet effective method that will ease the
old polish out of the decoration.