Sunday, 2 December 2012

Scratching and Scraping

Winter Twigs
(Based on Geoff Kersey's Trees, Woodlands and Forests)
Watercolour on Paper
18cm x 15cm (7" x 6")

This is my interpretation of another demonstration from Geoff Kersey's third programme about “Trees, Woodlands and Forests” on The Painting and Drawing Channel.

In this demonstration, Geoff painted a dark background and then used a craft knife to scrape the branches and twigs out of the wet paint. He finished by continuing the branches on the white paper.

Timing is everything with this technique. If you scrape too early, the paint fills up the line. If you leave it too late the paint dries and will not scrape out in the same way.

Geoff used the craft knife to create a variety of line thicknesses, but I found it easier to use a pointed piece of plastic to scrape out the thicker lines. This is a tool recommended for the technique by Ann Blockley in her book “Watercolour Textures”.

Ann differentiates between the techniques of scraping (removing wet paint) and scratching (removing dry paint). Scraping wet paint creates the types of marks shown in the picture on this post.  Scratching off dry paint leaves a bright white highlight and requires a delicate touch to avoid gouging chunks out of the paper.

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