Whilst working, several incidental sources of mark making arose.
On the lap top.
On a table with peeling stained varnish.
Drips under the work table 1.
Drips under the work table 2.
Drips under the work table 3.
During the hours of polishing, the large boards were washed down frequently. As they dried, very subtle shapes and shadows appeared in the changing light conditions.
Complete monochrome became very appealing. This will form an element of future developments.