Disc II, 2011 Aluminium, sawed out, anodized, Ø 900 x 3 mm (Photo: René Schäffer)

Disc VII, 2012 Aluminium, sawed out, anodized, Ø 720 x 3 mm (Photo: René Schäffer)

Installation, Kulturforum FFFZ Düsseldorf, 2013 (Photo: Rudolf Bendlage)

Disc VI, 2011 Aluminium, sawed out, anodized, Ø 900 x 3 mm (Photo: René Schäffer)

Installation in the Saxony-Anhalt Arts Foundation, detail, 2011 (Photo: René Schäffer)

Disc I, 2011 Aluminium, sawed out, anodized, Ø 970 x 3 mm (Photo: René Schäffer)

Disc V, 2011 Aluminium, sawed out, anodized, Ø 500 x 3 mm (Photo: René Schäffer)

Disk III and V, 2011 Aluminium, sawed out, anodized (Photo: René Schäffer)

Disc III and V, 2011 Aluminium, sawed out, anodized (Photo: René Schäffer)

Installation in the Saxony-Anhalt Arts Foundation, 2011 (Photo: René Schäffer)

Disc X, 2012 Aluminium, sawed out, anodized, Ø 480 x 3 mm (Photo: René Schäffer)

Disc IV, 2011 Aluminium, sawed out, anodized, Ø 670 x 3 mm (Photo: René Schäffer)

Disc IV detail, 2011 (Photo: René Schäffer)