Digital BW, The Print

Paul,

It was the water based Varathane Elite Diamond Finish IPN, Clear Semi-Gloss.
I spoke to the manufacturer and they told me this was the least yellowing of
their coatings. The solvent based would yellow even worse. If you would like
I can send you a scan of one of the Varathane coated prints.

Martin

----- Original Message -----
From: "Paul Roark" <paul.roark@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Monday, October 14, 2002 11:07 PM
Subject: RE: [Digital BW] Is there a difference? - Coatings


> Martin,
>
> Were you using the water-based Varathane or the solvent-based one?
>
> Paul
> _____________
>   -----Original Message-----
>   From: Martin Wesley [mailto:mwesley250@...]
>   Sent: Monday, October 14, 2002 8:43 PM
>   To: DigitalBlackandWhiteThePrint@yahoogroups.com
>   Subject: Re: [Digital BW] Is there a difference? - Coatings
>
>
>
>
>   ----- Original Message -----
>   From: "Robert Morrison" <rmorrison@...>
>   To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
>   Sent: Monday, October 14, 2002 9:28 PM
>   Subject: Re: [Digital BW] Is there a difference? - Coatings
>
>
>   > On 10/14/02 8:26 PM, "Paul Roark" <paul.roark@...> wrote:
>   >
>   (snip)
>   > >
>   > > Varathane makes several water-based "Diamond Wood Finishes" (blue
can
> at
>   > > your local hardware) that appear to work very well -- no dilution
>   needed.
>   > > The "Outdoor" version has UV inhibitors that could be useful (in
fade
>   > > testing now).  However, I don't like much yellowing, and, like UV
>   filters,
>   > > these UV inhibitors are slightly yellow.  The Eclipse, however, is
>   bright
>   > > enough and blue enough that with one coat it stays bright and 0.01
> units
>   > > cool.
>   > >
>   > > EAM just gets too yellow with the UV inhibitors.  So, to get rid of
> them
>   > > with polyurethane, use Varathane "Interior."  This formula was made
> for
>   > > maximum clarity.  With EAM the first coat remains almost a matte and
> the
>   > > Dmax is only up to 1.72.  However, with a second coat EAM is a nice
>   luster
>   > > with up to 2.33 for the Dmax.
>   >
>   > Stay clear of polyurethane--they yellow terribly.  Martin's varathane
>   prints
>   > turned completely yellow in about 6 months.
>   >
>   > The water-based golden products are all 100% acrylic...absolutely no
>   > polyurethanes.
>   >
>   > Robert
>   >
>   Paul,
>
>   Robert is definitely correct on this. I coated a number of prints with
the
>   Varathane Diamond coating that are now about 16 months old. The
Varathane
>   coated prints are now extremely yellow and the Golden Acrylic coated
> prints
>   are unchanged. It is a shame because I found the Varathane the easiest
to
>   work with. Another choice that has held up well with time was a water
> based
>   vinyl coating called ClearSheild that is sold by sign making supply
>   companies for over coating inkjet printed banners for outdoor display.
>
>   Martin
>
>
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