Building a DIY Contact Printing Frame

Contact printing remains one of the most precise techniques in analog photography and fine art printmaking, allowing practitioners to create sharp, full-scale prints directly from large-format film or negatives. For printmakers working in traditional processes, a reliable contact frame ensures even exposure and consistent results across a body of work. Meg Turner, whose practice spans wet collodion and darkroom photography, often emphasises that the simplest tools frequently yield the most authentic outcomes.

Many Australian photographers and printmakers discover that building their own equipment saves money and deepens their understanding of the process. Whether you are based in a shared studio space in Collingwood or working from a converted shed in Fremantle, constructing a contact printing frame is a rewarding weekend project. If you are new to the technique, a beginner's guide to contact printing offers a solid foundation before you start cutting timber.

Choosing the right materials

The core components of a contact printing frame include a rigid wooden base, a sheet of clear glass, and a hinged top section that applies even pressure across the negative and photographic paper. Plywood is the most common choice for the base, typically 12mm or 18mm thickness, as it resists warping and provides a stable surface. For the glass, opt for picture framing glass with smooth edges, or float glass cut to size by a local glazier.

In Australia, marine-grade plywood is widely available at Bunnings Warehouse or independent timber merchants, particularly around the Port of Brisbane or in Melbourne's inner suburbs. Standard hardware supplies—wood screws, small hinges, and felt or foam weather-stripping—are also easy to source. Budget approximately 60 to 120 AUD for materials, depending on whether you salvage glass or purchase new panes.

Sourcing glass and hardware

Float glass can be cut to your specifications at most hardware stores, though many Australian printmakers prefer to repurpose old picture frames or visit architectural salvage yards. In Sydney, shops around Surry Hills and Newtown often stock second-hand frames that include perfectly sized glass. For those in regional centres like Hobart or Geelong, online suppliers such as A&C Glass or Brisbane-based glaziers ship cut-to-size panes directly to your door.

Hinges matter more than many builders anticipate. Small brass or stainless-steel piano hinges provide smooth action and longevity, especially in coastal areas where salt air accelerates corrosion. Stainless steel is the safer investment if your studio sits within a few kilometres of the ocean, whether in Fremantle, Wollongong, or along the Mornington Peninsula.

Preparing the timber

Once you have your plywood, accurate measurement is critical. Standard large-format negatives measure 4x5 inches or 8x10 inches, but many Australian photographers also work with medium format or panoramic sizes. Cut the base slightly larger than your intended negative area, allowing at least 2cm border on every side. Sand the edges smooth with 120-grit followed by 220-grit sandpaper to prevent splinters and ensure the glass rests flat.

A straight edge and a sharp handsaw or jigsaw will produce clean cuts, though many makers prefer a circular saw guide for longer edges. If you are working with a particularly dry climate—common in Adelaide or during Perth's summer months—consider sealing the wood with a light coat of matte polyurethane to prevent moisture absorption and warping. The Australian climate can be harsh on unprotected timber, so this small step extends the frame's life considerably.

Assembling the base

Assembly begins with attaching small wooden cleats around the perimeter of the base, creating a shallow tray that keeps the negative and paper aligned. These cleats should be approximately 5mm high, just thick enough to hold the materials flat without interfering with the glass above. Pre-drill pilot holes to prevent splitting, particularly if you are using hardwood like Tasmanian oak or meranti.

Position the cleats so they form a rectangle slightly smaller than your glass pane, ensuring the sandwich of negative and paper cannot shift during exposure. Many Melbourne printmakers use double-sided tape in addition to cleats, which provides extra security for thinner paper stocks. Secure everything with wood screws countersunk slightly below the surface, then sand flush for a smooth finish.

Adding the glass and hinges

The top frame, or lid, holds the glass and attaches to the base with two hinges along one edge. Cut a simple wooden rectangle from thinner plywood—6mm works well—and route or sand a shallow recess on the underside to cradle the glass. This prevents the glass from sliding and protects the edges from chipping. Attach the glass using small glazing points or silicone adhesive, taking care not to apply too much sealant near the centre where it could contact the negative.

Install the hinges so the lid opens fully to 180 degrees, allowing easy placement of negatives and paper. For studios in humid climates such as Brisbane or Darwin, consider adding a small felt liner around the inner edge of the lid. This creates a slight cushion and compensates for any minor unevenness in the wood, ensuring uniform contact across the entire frame.

Testing and calibrating your frame

Before exposing valuable negatives, run a series of test prints using step wedges or scrap paper. Place a negative in the frame, lay a sheet of photo paper emulsion-side up on top, close the lid, and expose the frame under your enlarger or UV light source. Check the results for unevenness, which typically indicates insufficient pressure or debris caught between the glass and paper.

Adjust by tightening hinge tension, adding small foam pads at the corners, or cleaning the glass thoroughly with a lint-free cloth. Many Australian darkroom workers at community spaces like the Sydney-based Centre for Contemporary Photography or the darkroom facilities at the Royal Melbourne Institute of Technology troubleshoot their frames using a simple contact test sheet that reveals hotspots or soft edges. Patience during this calibration stage pays off in consistent, professional-grade prints for years to come.

Long-term care and storage

A well-built contact frame can last decades with minimal maintenance. Wipe the glass regularly with a microfibre cloth and avoid touching the inner surfaces with bare fingers, as oils transfer easily. Store the frame in a dry environment away from direct sunlight, and occasionally check the hinges for loosening screws.

In Australian studios where temperatures fluctuate—particularly in tin sheds or uninsulated spaces in places like Bendigo or outback South Australia—store the frame indoors during extreme weather. If you travel with your frame to workshops or plein air sessions, pad it well in a custom case to prevent glass breakage. With proper care, your DIY contact frame becomes a trusted tool, offering the same reliability as expensive commercial units while reflecting the hands-on ethos that defines traditional printmaking.

Building your own contact printing frame connects you more intimately with the analog process, fostering a deeper appreciation for the craft. Meg Turner welcomes enquiries about contract printing services and custom commissions, so reach out through her website to discuss your next project or workshop collaboration.