HELP needed

This topic has 11 replies, 10 voices, and was last updated 11 December 2021 at 10:57 by John Haine.

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7 October 2021 at 17:01 #565958
Steve Joffrey
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@stevejoffrey83991
Can anyone please advise me on what acid and concentration I should use for pickling a Butch smokebox, during the silver soldering ?.

Thanks.
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7 October 2021 at 17:01 #28382
Steve Joffrey
Participant
@stevejoffrey83991
8 October 2021 at 10:02 #566068
Brian Wood
Participant
@brianwood45127
Hello Steve,

I can't help as I am not a model builder but there are plenty of others on the forum who would be able to tell you. This will bring it back to to their attention.

Regards

Brian
8 October 2021 at 10:15 #566072
Jager
Participant
@jager
Hi Steve,

I just make up a solution of a litre of warm water and put around half a cup of citric acid crystals. This is not aggressive, nor dangerous, like sulphuric.

Just keep an eye on your work, no sweat.
8 October 2021 at 10:18 #566074
Jon Lawes
Participant
@jonlawes51698
I use citric acid as well. I use mine in a new budget Tesco kettle to warm it before pickling. I confess I never worked out the concentration, I just added a handful to an almost full kettle. It lasts a while.
8 October 2021 at 10:31 #566075
Thor 🇳🇴
Participant
@thor
Hi Steve,

Citric acid solution works well for pickling silver soldered items, may take a bit longer than using sulphuric acid (around 10%), you may be able to get it as car battery acid. Hydrochloric acid ("brick acid" ) can also be used for pickling, take care when using strong acids and take adequate precautions.
It has been discussed earlier, here.

Thor

Edited By Thor 🇳🇴 on 08/10/2021 10:31:54
9 October 2021 at 14:48 #566188
Keith Hale
Participant
@keithhale68713
Hi Steve

10gm of citric acid crystals per litre of water.

Regards

Keith

Edited By Keith Hale on 09/10/2021 14:51:45
9 October 2021 at 15:00 #566189
Gary Wooding
Participant
@garywooding25363
The pickle I use for gold and silver jewellery is 10% H2so4. I tried Hcl many years ago, but didn't like it as much. I can't remember why.
9 October 2021 at 15:22 #566191
Robert Atkinson 2
Participant
@robertatkinson2
Fumes from hydrocloric acid will rust everthing in sight.

HCl has no place in a machine shop.
Also note you now need a locence for any significant strength of Sulphuric acid including battery strength. Technically emptying the acid from a battery to use as a pickle is a crminal offence.
9 October 2021 at 19:59 #566211
AJAX
Participant
@ajax
Posted by Robert Atkinson 2 on 09/10/2021 15:22:29:

Fumes from hydrocloric acid will rust everthing in sight.

HCl has no place in a machine shop.
Also note you now need a locence for any significant strength of Sulphuric acid including battery strength. Technically emptying the acid from a battery to use as a pickle is a crminal offence.

Never heard of that requirement so I had to look it up out of interest.

https://www.gov.uk/government/news/government-introduces-tough-new-measure-to-prevent-acid-attacks
11 December 2021 at 09:22 #574980
Steve Joffrey
Participant
@stevejoffrey83991
Posted by Steve Joffrey on 07/10/2021 17:01:47:

Can anyone please advise me on what acid and concentration I should use for pickling a Butch smokebox, during the silver soldering ?.

Thanks.

Thanks, everyone for the helpful replies, you gave.
11 December 2021 at 10:57 #574991
John Haine
Participant
@johnhaine32865
A PLEA! It would be most helpful if when people post a question, rather than just saying "Help Needed" or similar they say "Help with pickling" – then people can judge better if it's worth reading the post.
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