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    Re: Sextant on ebay
    From: cc thomas
    Date: 2006 Sep 7, 18:56 -0500

    Thanks for the information. Sounds appropriate.

    Agreeing that spraying probably is not a good
    idea, for several reasons, does the Rustoleum/Krylon
    primer & finish come in a brushable form  ?

    How do you avoid brush marks  ?

    Cordially,
    Courtney


    ----- Original Message -----
    From: "Red" <hellosailor@verizon.net>
    To: <NavList@fer3.com>
    Sent: Thursday, September 07, 2006 7:05 PM
    Subject: [NavList 1223] Re: Sextant on ebay


    >
    > Lacquer was always more of a high end finsih, I'd be willing to bet it
    wasn't
    > used on a soviet sextant. And "real" lacquer isn't used much today, too
    much
    > volatile content. Odds are the sextant is some type of baked enamel
    finish, and
    > a primer for enamel, plus another enamel (Rustoleum, or Krylon) coat over
    it
    > should do fine.
    >
    > Spraying it with anything is still going to get spray in the bearings,
    etc.,
    > unless they are masked awfully well. I can't see this being a good idea
    unless
    > the sextant is disassembled before painting. And even then...the paint
    will
    > affect the resale value. (Give it a clever name like "PussyCat Pink, used
    by
    > offshore houses of ill repute!" and you might even get more bucks for it
    on
    > eBay. "Trump Blue, custom made for Donald Trump's Yacht." <G>)
    >
    >
    > ----- Original Message -----
    > From: "Bill" <billyrem42@earthlink.net>
    > To: <NavList@fer3.com>
    > Sent: Thursday, September 07, 2006 6:13 PM
    > Subject: [NavList 1220] Re: Sextant on ebay
    >
    >
    > >
    > > Courtney wrote:
    > >
    > > > I hope I'm not wearing out my welcome....
    > >
    > > More like the exhausting the knowledge stored in my gray matter or paint
    > > locker.
    > >
    > > > but, it being a Russian naval sextant, what would you assume
    > > > they finished it with, say 25 yrs ago ?  Enamel, lacquer, or ??
    > >
    > > I believe lacquer was an automotive finish before enamel.  My historical
    > > knowledge on when enamel went into common use is not good, but it has
    been
    > > around for a long time.  At least 25 years.  It would be the choice over
    > > lacquer for a sextant.  Ken of Celestaire would be your best source of
    what
    > > was used when.
    > >
    > > > What would be the more durable in a marine environment ?
    > >
    > > Enamel would be my choice over lacquer for a sextant. (Note there is a
    > > difference between furniture and automotive lacquer).  Ken of Celestaire
    > > would be your best source of what was used when.
    > >
    > > If starting from bare metal today, perhaps a two-part epoxy, anodized or
    > > electrostatic powder application?
    > > >
    > > > When you say 'good quality enamel' what's the difference
    > > > between good and less so, chemically  ?
    > >
    > > No idea chemically.  A cheap enamel on a car might last a few years
    before
    > > it starts to chalk.
    > > >
    > > > More generally, what makes up lacquer other than the alcohol
    > > > solvent and some beetle stuff; and, what is the solvent and solute
    > > > in enamels ?
    > >
    > > *Shellac* is ground up beetle stuff dissolved in alcohol.  I don't
    recall
    > > (if I ever knew) what the chemical makeup of the lacquers, enamels, or
    > > enamel thinners are.  Enamel thinner comes in different formulations
    based
    > > on spraying conditions (temperature, humidity, and size of area to be
    > > sprayed).  Some enamels can also be catalyzed for a quicker cure--almost
    a
    > > must if you cannot bake it.  Solvent-based enamels come as "synthetic,"
    > > Acrylic and God knows what else these days.  On the other hand
    Rust-Oleum
    > > "enamel" is oil based.
    > > >
    > > > Pardon my ignorance and thank you for your patience,
    > > >
    > > Pardoned.  Short of hitting my library (which is out of date on
    automotive
    > > finishes as the low-VOC/medium and high solids and clearcoat finishes
    evolve
    > > at a rapid pace based on government pollution regulations) I would
    suggest
    > > you do what I would have to do, start Googeling.
    > >
    > > Or visit a local automotive-paint supplier.  By the time you teach
    yourself
    > > everything there is to know about paint to date it will be obsolete.
    > > (Suggest a Ph.D. in chemistry to keep abreast.)
    > >
    > > Bill
    > >
    > >
    > > >
    > >
    > >
    > > --
    > > No virus found in this incoming message.
    > > Checked by AVG Free Edition.
    > > Version: 7.1.405 / Virus Database: 268.12.1/440 - Release Date: 9/6/2006
    > >
    > >
    >
    >
    > >


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