Removing solder...

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VamHelsing
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Removing solder...

Post by VamHelsing » Sun Jan 12, 2020 5:48 pm

Any ideas on how to safely remove solder form a Morgan?
Low $ coin 21-S (unless it's a 1B7...)

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vampicker
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Re: Removing solder...

Post by vampicker » Sun Jan 12, 2020 8:10 pm

Don't think there's any 'safe' way, but likely the least damaging way it to heat it up with the tip of a soldering iron and lift it off. Might have to chase it to the edge
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...kenny
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Re: Removing solder...

Post by ...kenny » Sun Jan 12, 2020 8:37 pm

heat it like JR said and then solder sucker! Seriously!! But it may leave a trace/micro layer depending on surface... :lol:
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Geseas
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Re: Removing solder...

Post by Geseas » Sun Jan 12, 2020 8:53 pm

Different alloys in the solder reacting with the silver/copper may be a problem. Alot of different kinds of solder I think.
Crack that slab habit, collect in the raw

iwillbenice
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Location: Buffalo,New York

Re: Removing solder...

Post by iwillbenice » Sun Jan 12, 2020 11:04 pm

LP torch to sweat solder area and remove solder with a Q-tip wipe.
Do not over torch area with issue.May take multiple takes.
Good luck.

Brabjohn
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Re: Removing solder...

Post by Brabjohn » Mon Jan 13, 2020 3:45 am

Solder wick is the best way to remove solder. It’s a braided copper wire that acts like a sponge.

Mhomei
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Re: Removing solder...

Post by Mhomei » Mon Jan 13, 2020 12:01 pm

I would agree with brabjohn and also suspend coin with soldered area pointing down to eliminate flow. Let gravity help

Good luck and please update
Maybe a before and after pics

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Kurt28
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Re: Removing solder...

Post by Kurt28 » Tue Jan 14, 2020 7:44 pm

I will assume that the removal of solder is an attempt to restore a piece previously used for jewelry.

The term solder is frequently used as a generic term like “tape” or “adhesive.”

In this case there are two types of solder to consider.
Solder used in electronics has a low melting temperature (around 360 to 370 degrees Fahrenheit,) typically contains lead and can be removed rather easily, leaving only a thin surface coat with attendant staining.
A jump ring can easily be attached to a coin by anyone with a soldering iron.

The other type is used by jewelers, and while frequently called silver solder, it is a silver bearing brazing compound. It melts at a much higher temperature and seldom contains lead. The heat range for melting is from 1145 to 1365 degrees Fahrenheit.
For this, the hardware store propane torch is sufficient to melt for the purpose of bonding. But to melt this silver brazing material for the purpose of removing a jump ring, you may wish to consider an oxy-acetylene torch with a very small tip. It is capable of melting the offending compound before the heat is transferred to much of the coin. It too, will leave a residue and possibly heat induced oxidation.

Either way it is dicey. About like plugging holed coins. Learn on the cheap coins first.
Good luck and share your learning experience with us.

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