[meteorite-list] varnish on pallasites

From: Marcin Cimala <marcin_at_meteoritecentral.com>
Date: Tue, 27 Mar 2012 18:28:01 +0200
Message-ID: <70AA3BC0C7974A22918FBF1994302844_at_meteorytf1cafb>

Guyz I know, but there is no possibility to repolish this ultra thin slice,
it will break into pieces.
Its also 100000% stable so the only reason to paint it again is to make it
looks perfect polished again.

It looks beautifull
http://www.youtube.com/watch?v=xvcUAkJkJmM
and now not very spectacular
http://meteoryt.net/ebay/seymchan.jpg
You can see that surface is not polished with the same quality. Still some
varnish in cracks need to be cleaned.

-----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
http://www.Meteoryty.pl marcin(at)meteoryty.pl
http://www.PolandMET.com marcin(at)polandmet.com
http://www.Gao-Guenie.com GSM: +48 (793) 567667
--------[ Member of Polish Meteoritical Society ]--------




> Adam beat me to it. Avoid varnish and sealers like the plague.
>
> My two cents (actual worth may vary) - completely remove all traces of
> the varnish. Put a proper polish on the specimen. Then bake it in an
> oven for several hours to help purge any residual moisture. In my
> experience, Seymchan is stable when prepared properly, so the varnish
> was likely a measure of laziness (as Adam said), and not an attempt to
> stabilize the specimen by sealing out moisture.
>
> Every time I see a specimen with varnish or polyurethane on it, I cringe.
>
> Best regards,
>
> MikeG
>
> --
> -----------------------------------------------------------
> Galactic Stone & Ironworks - MikeG
>
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>
>
>
> On 3/27/12, Adam Hupe <raremeteorites at yahoo.com> wrote:
>> Do not use lacquer on meteorites, period! In this day and age, dealers
>> should know better. Any time I see it, I think "lacquer is for lazy
>> people
>> who do not want to take the time to polish properly." There is no
>> substitute for a good polish which reduces the surface area and repels
>> moisture. Lacquer traps moisture in the meteorite and hastens
>> disintegration. Just ask anybody who has owned a Lacquer covered
>> Brenham!
>> I had one completely fall apart and the only thing holding together was
>> the
>> lacquer finish. It held it together just long enough to make it to my
>> trashcan.
>>
>> Happy Collecting,
>>
>> Adam
>>
>>
>>
>>
>> ----- Original Message -----
>> From: Marcin Cimala <marcin at meteoryt.net>
>> To: meteorite-list at meteoritecentral.com
>> Cc:
>> Sent: Tuesday, March 27, 2012 8:35 AM
>> Subject: [meteorite-list] varnish on pallasites
>>
>> Hello List
>> Need help :-(
>>
>> I have beautifull big slice of Seymchan 1mm thin. I wanted to put it to
>> new
>> membrane frame toogether with my 2mm Brahin and 1mm Shirokovsky so I
>> start
>> clean them from oil using acetone.
>> Unfotunatelly I didn't know that Seymchan was covered with very thin
>> varnish
>> layer. Acetona damaged varnish so I need to remove it. Now slice dont
>> look
>> nice as before becouse polishing is not same on whole surface, varnish
>> make
>> it look super polished.
>>
>> Im not fan of using such protections on any meteorite so I have no
>> experience in this topic. I need sugestions how to put thin and clear
>> varnish layer. I should use normal clear varnish in spray or something
>> else
>> ?
>>
>> Thanks
>>
>> -----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
>> http://www.Meteoryty.pl marcin(at)meteoryty.pl
>> http://www.PolandMET.com marcin(at)polandmet.com
>> http://www.Gao-Guenie.com GSM: +48 (793) 567667
>> --------[ Member of Polish Meteoritical Society ]--------
>>
>>
>>
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Received on Tue 27 Mar 2012 12:28:01 PM PDT