About Zest-it® Damar Varnish
The use of Damar Varnish and varnishing in general.
|Varnishes in general.
Gum Damar dissolves naturally in Zest-it in about 2 to 3 days without any assistance, apart from the occasional stir.
You may have read that Gum Damar only dissolves in Turpentine, that use to be the case - things have moved on.
This type of varnish is also referred to as a 'spirit varnish' or 'cold cut varnish' in some written works, because heat is not used to dissolve the resin.
The Zest-it Damar Picture Varnish is equivalent to a '5lb cut' varnish.
Once dissolved we allow the solution to rest before filtering, this is necessary to remove any minute particles that remain in suspension in the solution, the filtered varnish is bright and crystal clear.
The primary role of any varnish is to protect the surface of a painting or object. Varnishing a painting is an important factor in the archival life of an oil painting.
Damar Varnish (sometimes spelt Dammar) is the traditional varnish for oil paintings and has stood the test of time.
The painted surface needs to dry before any varnish is applied, with oil paint this is a slow process as the oils dry by oxidization and need air to do this. Depending on the thickness of the paint this can take between 3 to 12 months.
Varnishing needs to be carried out on a dry day with little air flow for best results. It is always better to apply varnish in thin coats allowing drying in-between. Apply with a soft brush and even strokes. Protect from dust whilst drying. Always test on a small area before applying to the painting.
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