There are many kinds of sculptural objects in the grounds of Narra Bukulla, at Penders, on the south coast of New South Wales. So for toolophile Marr, the stump left by a house-threatening spotted gum posed a sculptural problem. This 60s-era angle grinder, a remnant of his misspent youth, was a readymade solution. The evil-smelling black jack completes Marr’s iconoclastic gesture.