Early in his career, the need arose in Sietse
Jonker to make painting work in a responsible way. For that
purpose,a thorough knowledge of painting materials is indispensable.
To fulfill this need, very soon after the education period,
manuscripts were read and studied on the painting techniques
of artists in the (distant) past. By doing this, Sietse Jonker
developed, through time, a certain style which still is evolving.
In fact, every painting goes through a very handicrafted and
labour intensive process. In short, this process is as follows:
The surface is prepared with priming coats.
A beginning is made by drawing quite a complete sketch which
forms the base for the painting. This sketch is copied onto
the surface. An imprimatura (a thin layer of color) is applied
to the surface.
Next, the first painting
layer is put over the imprimatura. This layer is done
with tempera paint to organize the mutual tone properties.
The next phase is applying a varnish and the
first layer of oil paint in thin color tones. The following
layer is the actual painting, after which work continues with
thin glacing layers.
This glazing deepens specific tones, gives more contrast and
pulls together one of the most mysterious aspects of a painting:
the skin of the paint