Cally Trench's A Net of a Wedge (2015) maps all six faces of an oak wedge, showing the patterns of the grain that result from the different angles of cut. In mathematical terms, the drawing is a 'net', a type of diagram of a three-dimensional object, which could be cut out and folded to remake the external surface of the object.

The drawing magnifies the orginal wedge by 2.5 times. This is a common magnification in the kind of magnifying glasses used by children to examine insects, stamps and the backs of their hands. Normally, drawings of objects try to retain a sense of their 3-dimensionality through perspective and shading. This drawing, by contrast, converts the wedge into a purely flat 2-dimensional surface. It becomes a ghost of a wedge. However, as you look at the drawing, it appears unstable and not quite flat; it seems to want to form itself into a 3-dimensional object.

A Net of a Wedge was made in response to Cally Trench being given an oak wedge, along with fifteen other artists, as part of a project initiated and curated by Sophie Loss. The resulting works were exhibited in Re Object at The Tetley, Leeds, from 6 to 22 March, with the opening coinciding with the 18th International Artists' Book Fair, Leeds.

Re Object on the AMBruno website