Fronk’s lighthearted assemblages recall vintage rockets, ray guns, and robots all while evoking the feel of high modern sculpture. The industrial mould’s restricted color palette also imparts a tight formal unity to an exhibition that cannot be contained within the gallery walls. Fronk’s assembled bas-relief can even be found adorning semantics’ storied exterior. Through April 27. Industrial Compositions at semantics, 1107 Harrison Ave., Brighton Hours: Saturdays 12-4pm or by appointment. Info: firstname.lastname@example.org.