any kind of ink or paint used on glass will eventually come off,
impossible to know how long.  longest results will come from the
enamel paint pens i mentioned.

etching and hot branding would be the most permanent solutions. 
however, its not reversible, so i would be very careful about choosing
a discreet location or simply not doing it all.

could you use stickers?  like a stencil cut decal, this way you could
avoid having to stick something blank on and then writing.  or even a
window tint that you could cut yourself.  if ever peeled off, any
residue would be easy to remove and most likely not damage the glass
in any way.




On 8/9/05, Sabrina Henneman <[log in to unmask]> wrote:
> I want to number glass (much more invisible than black ink when
> right-side up), and perhaps use it on dark objects so that I don't have
> to put down a gray layer of paint before I write the number in black.
> Especially for objects that the number is less concealed, a slab of gray
> would be much more noticeable than the number in white, I think.
> 
> I'd just like to simplify things, if possible.
> 
> Sabrina
> 
> -----Original Message-----
> From: Punk Librarian [mailto:[log in to unmask]]
> Sent: Monday, August 08, 2005 4:46 PM
> To: [log in to unmask]
> Subject: Re: [MUSEUM-L] white marking pens
> 
> 
> does it have to be white?
> what are you trying to mark?
> 
> Sharpie, Pen-Touch, DecoColor, Pilot, Marvy, and Krylon all make
> enamel based paint pens which will write on pretty much anything.  I
> don't know what else they put in the pens besides paint but sometimes
> large amounts of clear liquid will come out and stain whatever you're
> working on (this usually applies when trying to fill a large area, not
> just simple writing.)
> 
> these paint pens come in all colors, including white - however, the
> lighter colors tend to make less than opaque marks on a consistent
> basis.  silver and gold tend to perform the best.  make sure you test
> out the pens before working on anything important, they all have a
> tendency to leak
> 
> if you want to get into pen and nib, Windsor and Newton makes a really
> good white calligraphy ink - which, for whatever reason, makes a
> consistent and opaque marking.  its kind of like white out on a more
> professional level.
> 
> all of this stuff should be available at Dick Blick
> www.dickblick.com
> 
> 
> 
> 
> On 8/8/05, Sabrina Henneman <[log in to unmask]> wrote:
> > Does anyone have a source for white pens for marking collections? I'd
> > rather not get into ink and nib, if possible. We use B-72 in acetone
> as
> > clear coats, so I need something that won't dissolve on me.
> >
> > Sabrina Henneman
> > Registrar
> > Genesee Country Museum
> >
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