The plaster cast: imprint and reproduction

Plaster occupies an uneasy position between presence and absence. Applied to a body, it records the pressure of a hand, the turn of a wrist, or the shallow map of pores and creases. The resulting object can resemble the person who made it while excluding nearly everything that made that person alive. Its pale surface carries a physical trace, yet it also seals that trace beneath a hard, opaque skin.

For Alexandra Mawimbi, this tension is central to a practice moving between sculpture, two-dimensional art, video, performance, sound and installation. The works held in her portfolio do not simply preserve bodies as stable objects. They ask how images, objects and recorded actions produce identity, memory and authority. Reproduction becomes a means of examining what a body can disclose and what representation inevitably conceals.

The plaster cast offers a focused way into that inquiry. Its negative mould and positive form, its tactile surface and repeated contours, reveal the difference between an original encounter and its aftermath. This distinction has particular force in Australia, where intimate records of the body circulate through neighbourhood studios, commercial galleries, biennales, collections and the broader market for sculpture.

Casting the body, preserving its trace

Making a cast begins with an encounter between a body and a material. A flexible mould, commonly made from alginate or silicone, captures the first negative; plaster is then poured or pressed into it to create a positive form. Even an apparently faithful cast remains selective. It may register fingertips, hair, folds in clothing or an abrupt shift in weight, while temperature, breath and interior volume remain beyond its reach.

This process gives the cast the character of an index rather than a transparent copy. It points towards an absent body through pressure, texture and volume. When a cast is divided, cracked or repaired, it begins to carry the history of that intervention alongside the body’s initial imprint. The seam where sections meet becomes evidence of manufacture, revealing that bodily likeness depends upon a sequence of technical and human decisions.

Plaster also changes while it dries. It heats as it sets, restricts movement and demands a period of stillness. Those conditions can make the production of a cast resemble a performance of restraint. Mawimbi’s broader practice is sensitive to such durations: bodies wait, move, repeat gestures or disappear from view, while video and sound retain different aspects of what occurred. A cast is the residue of that unfolding time, compressed into an object that can be encountered later.

From negative mould to positive form

The relationship between mould and cast is structured by reversal. The mould is concave where the cast is convex; it holds the shape of what it surrounds, while the cast appears to stand independently. This simple inversion generates a productive confusion. Looking at the mould, the viewer sees an absence shaped like a body. Looking at the cast, the viewer may momentarily mistake a surface for a living volume before recognising its fixed and artificial condition.

Reproduction does not guarantee sameness. Air bubbles, uneven thickness, exposed fibres and imperfect joins distinguish one cast from another. Even when based on the same mould, each positive form carries small variations caused by mixing, timing, pressure and drying. Seriality therefore produces difference rather than abolishing it. The repeated body becomes a set of related surfaces rather than one perfect image.

Mawimbi’s use of two-dimensional and moving-image work complicates this distinction further. A photograph flattens volume into tonal contrast, cropping whatever does not fit the frame. Video retains duration, showing a gesture before and after its most legible moment. Recorded sound can preserve the rhythm of breathing, a shift of footing or the acoustic pressure of a room. These media do not merely illustrate sculpture; they test competing accounts of what it means for a body to be present in representation.

Absence, mourning and the ethics of copying

Casts have long been associated with memorial practice because they can suggest that a body has been kept while the person is gone. Their resemblance can comfort, but it can also unsettle. The object resembles someone who cannot return to correct the likeness, explain the circumstances of its making or revoke its circulation. Mourning is therefore bound to questions of possession: who may preserve an image, who may reproduce it, and who is asked to carry its meaning.

In Mawimbi’s work, representation is treated as an active relationship rather than a neutral description. The viewer is confronted not only with an image of a body but with the procedures that make the image possible. A cast depends upon trust, labour and technical knowledge that can easily disappear from the finished artwork. Bringing these conditions into view allows the work to consider whose body is made visible, whose presence is valued and whose absence is interpreted.

This ethical field is not exhausted by the model and the artist. Technicians, fabricators, assistants, archivists and gallery handlers also shape how an object reaches its audience. Editioning can multiply a form, while provenance and catalogue information attach names, dates and values to it. These systems influence how a cast is read: as an intimate trace, an autonomous sculpture, a limited edition or a collectible object. The meaning moves with the object.

The cast’s connection to living presence lies in its incompleteness. It does not reproduce the person’s interior life, social position or continuing relationships. Yet its tactile surface can prompt awareness of the body as something active, vulnerable and shared. Seen alongside Mawimbi’s performances, installations and sound works, plaster becomes an instrument for holding presence and loss in the same material field.

Material memory under Australian conditions

Gypsum plaster is porous, brittle and responsive to its surroundings. Australian heat, humidity and rapid temperature changes can cause staining, salt formation or cracking, particularly when works move between air-conditioned galleries and unconditioned storage. Packing a cast for transport from Melbourne to Sydney or from a city workshop to a regional collection requires careful support, climate control and a condition report. The journey adds another layer to a material already concerned with touch, damage and retention.

Local viewing conditions shape this conversation in distinct ways. Melbourne’s network of studios, project rooms and smaller gallery spaces often keeps the circumstances of production close to everyday neighbourhood life. Sydney’s commercial gallery corridors and public programmes, including the Bienniale of Sydney, introduce casts to larger institutional and collecting audiences. Adelaide’s Bienniale of Australian Art offers another setting in which objects are encountered through curatorial themes, site-specific displays and public encounters with artists.

The Australian market for sculpture also encourages distinctions between uniqueness and multiplication. An editioned plaster work may be catalogued with an edition number and retain the status of an artist’s proof, while an uncast object carries the particular history of its making. Commercial galleries, auction houses and artist-run spaces each frame that value differently. Provenance, exhibition history and conservation records can matter as much as scale or finish, allowing questions about replication and authorship to remain active beyond the sale.

These conditions do not localise the body, but they affect the social life of the object that bears its trace. Climate, transport, display and collecting become parts of the cast’s unfolding meaning. A material designed to preserve bodily evidence is continually exposed to the environmental and economic systems through which artworks circulate.

What the cast makes visible

Across Mawimbi’s portfolio, the plaster cast condenses several concerns: the vulnerability of the body, the instability of likeness, the authority of the archive and the distinction between an event and its record. It is both material and evidence, an object that can challenge certainty through the very precision of its surface.

Material and process

Image and time

Read together, these elements resist the idea that reproduction simply duplicates. Each process transforms what it carries. The cast preserves an imprint while changing it; the image fixes a view while exposing its framing; the archive protects a work while placing it within new systems of display and exchange. Mawimbi’s practice keeps that transformation visible, asking viewers to consider what remains when a body, a gesture or a trace enters the reproducible form.

The plaster cast is therefore neither a substitute for the living body nor a detached museum object. It is a meeting point between touch and distance, intimacy and institutions, presence and mourning. Its value lies in the way it makes resemblance unstable, inviting sustained attention rather than settled identification.

Explore Alexandra Mawimbi’s selected works in the portfolio, then follow the links to exhibitions, news and biographical documentation. For studio visits, exhibition proposals, collection enquiries, commissions, or press and rights requests, contact Alexandra Mawimbi through the details published on the website.