polish residue

Questions on polishing, restoration, conservation + manufacturing techniques

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fripou
Posts: 64
Joined: Tue Jul 26, 2005 8:20 am
Location: Paris, France

polish residue

Postby fripou » Thu Jan 10, 2019 10:44 am

Hello

I want to know if it is ok to soak a silver item in not water (I am thinking of my holy water mural font) , in the hope it will dissolve the polish residue in fine carving.

Could it damage anything, like a old soldering or repair ?

Thank you
François

AG2012
contributor
Posts: 3333
Joined: Fri Apr 13, 2012 9:47 am

Re: polish residue

Postby AG2012 » Thu Jan 10, 2019 12:10 pm

Hi,
Do not worry;hot water, no matter how hot cannot damage silver.
You can use soft artist paintbrush,too.
Regards

fripou
Posts: 64
Joined: Tue Jul 26, 2005 8:20 am
Location: Paris, France

Re: polish residue

Postby fripou » Thu Jan 10, 2019 12:22 pm

Thank you AG2012 !
I was sure the silver could not be dammaged
I was more concerned about the solderings

Thank you for reassuring me !

AG2012
contributor
Posts: 3333
Joined: Fri Apr 13, 2012 9:47 am

Re: polish residue

Postby AG2012 » Thu Jan 10, 2019 2:29 pm

Hello again,
Melting point of hard silver solder is 700-800 degrees Celsius.
Even lead tin soft solder melting point is close to 200 degrees Celsius.
Water boils at 100 Celsius (at sea level), right ?

Regards

fripou
Posts: 64
Joined: Tue Jul 26, 2005 8:20 am
Location: Paris, France

Re: polish residue

Postby fripou » Thu Jan 10, 2019 3:45 pm

Thank you !

I soaked the wall font in almost boiling water
I tried to loosen the stuff with a stencil brush.... nothing

I let the water cool and tried again.... nothing


I don't know what the stuff-grime is ...
What can I use to scrape it off without scratching the silver?

Thank you

François

Image

Image

AG2012
contributor
Posts: 3333
Joined: Fri Apr 13, 2012 9:47 am

Re: polish residue

Postby AG2012 » Thu Jan 10, 2019 4:45 pm

Do NOT use anything sharp, and do NOT try to scratch it with metal.
You can use wooden toothpick, though.
Soak well and try several times - wood cannot scratch silver.
You can soak with silver polish,too and use toothpick again.
Regards

fripou
Posts: 64
Joined: Tue Jul 26, 2005 8:20 am
Location: Paris, France

Re: polish residue

Postby fripou » Thu Jan 10, 2019 7:15 pm

many thanks, AG2012 !

You are a great help !

Cheers
François


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