[Scriptoris] Information sought

[Hillary Greenslade]

To add to that, from the Winsor and Newton site: 
Designers Gouache (opaque watercolors)
http://www.winsornewton.com/products/gouache/designers-gouache/
http://www.winsornewton.com/assets/Leaflets/win_10724_dg_a4_pdf_english.pdf
 
According to the brocure, which is full of info: Layering ColourDesigners Gouache is intended to be applied fairly thickly in comparison to water colour.
If diluted with too much water it may 'powder off' the surface when dry. If applied in too
many thick layers it may have a tendency to crack, due to the under layers absorbing
water and Gum Arabic from the newly applied paint; this only becoming apparent when
dry. We would advise that fewer layers are definitely best when working with gouache.
(see also “Thick Colour/Adding Texture” in Mediums Section).
 
Gum Arabic can be added to Designers Gouache when painting in layers to reduce
cracking. Gum Arabic should also be added to the colour when airbrushing to ensure that
the colour is not over thinned. However, the addition of Gum Arabic should be kept to a
minimum as it increases brilliancy, gloss and transparency if used in large quantities.
 
Gum Arabic and Ox Gal Mediums: 
http://www.winsornewton.com/news/making-water-thick-or-thin-gum-arabic-and-ox-gall
http://www.winsornewton.com/products.aspx?PageID=129&ProductID=879
http://www.winsornewton.com/products.aspx?PageID=129&ProductID=880
 
Hope that helps, Hillary
 

From: Hillary Greenslade <hillaryrg at yahoo.com>
To: David Brown <lddevin03 at yahoo.com>; "Scribes within Ansteorra - SCA, Inc." <scriptoris at lists.ansteorra.org> 
Sent: Saturday, January 21, 2012 6:03 PM
Subject: Re: [Scriptoris] Information sought


Yes,  I believe you need to add a bit of water to the paint, then add one drop of gum arabic.  The gum arabic is essentially a glue, that needs to blend with the pigment granuals, and in order to blend with the pigment, you need to add water to the mixture.  It doesn't take much of the gum in the mixture, and too much can mess it up.   Of course, I'm talking about adding the gum arabic to the paint in a paint well on a paint pallet, not directly to the pre-painted area on a scroll.   
 
Hillary

From: David Brown <lddevin03 at yahoo.com>
To: "scriptoris at lists.ansteorra.org" <scriptoris at lists.ansteorra.org> 
Sent: Saturday, January 21, 2012 4:34 PM
Subject: [Scriptoris] Information sought

Greetings good scribes! I am in need of some information. Can you put gum arabic on dry gauche without having to re-wet the paint color first?

Devin
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