Ken Wilder: Juncture at Upright Gallery in Edinburgh features a three-dimensional construction which blurs the boundaries between installation, sculpture and painting. Inspired by the 1960s paintings of Agnes Martin and Frank Stella and installed as a 24-hour exhibit in the gallery window, it can be viewed at any time of the day in different lighting conditions, whether from the front or the side. The piece has two components: a T-shaped object constructed in 24mm plywood and a steel base from which the plywood structure cantilevers out at the rear, extending into the Gallery. A narrow slot steps up towards the rear, the end section of which is open to allow light in from above. This corridor-like space has to be peered into through the window from the street.

Elsewhere in the Gallery, Ken is displaying a series of new wall reliefs, which again blur distinctions between painting and sculpture, but use ‘traditional’ materials such as gold leaf, brass, graphite and lead white paint. Downstairs, Wilder is showing photographs of a 2004 work entitled Milky Voids, an intervention using milk into an engine house at Botallack mine, Cornwall.