RE: First Tricolor Gum (on aluminum)...for dummies

[trevor cunningham <tr_cunningham@yahoo.com>]

i know i'm probably an idiot for asking this, but when i first saw the subject of this thread, it sparked interest in me with the thought of these metallic color prints...the gesso layer put the kebash on that...isn't there a way to preserve the reflective nature of the metal to produce a "glowing" print (kinda like cibachrome sparkles)...otherwise, why print on aluminum?

Loris Medici <mail@loris.medici.name> wrote:
> My understanding also is the same, CaCO3 gives a gritty/toothy surface.
> Probably matte acrylic gesso also contains considerable amnt. of CaCO3
> both as a colorant and as a surface tooth agent. Since I learned this
> from Keith and I also know that he may put 6 - 7 layers on top of each
> other, I'd say this kind of surface priming is pretty robust. The layer
> order is Cyan, Magenta and Yellow... (Black is missing - didn't
>  bother
> since the M layer was unregistered, I just wanted to see how colors
> interact with each other.)
>
> Regards,
> Loris.
>
> -----Original Message-----
> From: Katharine Thayer [mailto:kthayer@pacifier.com] 
> Sent: 11 Aralýk 2006 Pazartesi 17:07
> To: alt-photo-process-l@usask.ca
> Subject: Re: First Tricolor Gum (on aluminum)
>
> ...
>
> The calcium carbonate, I take it, is for "traction" to give the gum 
> something to hang onto, much like the fine sand I use in acrylic for 
> the same purpose on hard surfaces. I find that it doesn't always 
> hold three layers; sometimes it will, but sometimes the top one will 
> only hold in areas where there aren't already two layers of gum. And 
> sometimes the top layer will stick to the other two layers and then 
> all three layers pull off the surface together. So I'd say you did 
> quite well on your first attempt. Which was your last layer, the 
> yellow or the magenta?
>
> I suppose in a
>  way this could be seen as a variation on the gelatin/ 
> gesso thing. It's interesting to watch how ideas spread and mutate.
> Katharine



"The optimist believes this is the best of all possible worlds.  The pessimist fears it's true"  - J Robert Oppenheimer

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