Hewes 120 Stainless Steel Reel: Loading Tips for Clean Negatives

By Firstcall Photographic | Published: 2026-11-01

Category: How-to Guides

Learn how to load 120 film on a stainless steel reel without kinks, scratches, or uneven development. Practical Hewes reel loading tips for clean negatives every time.

Quick answer

Load 120 film onto a Hewes 120 stainless steel developing reel by starting the film under the reel's hook-on loading device, holding the film slightly bowed, and turning the reel until the sprocket holes catch. Work in complete darkness and check that the film sits in the spiral grooves before developing.

Why 120 film behaves differently on a stainless reel

120 film has no sprocket holes along the edges, so the reel's hook system relies on the film's backing paper edge and the natural curl of the emulsion. Unlike 35mm, you cannot rely on sprocket holes to guide the film; instead, the film must be held straight and fed evenly so the spiral grooves capture both edges. The Hewes 120 reel's sprocket system is designed to catch the film quickly, but only if the film is not twisted or pinched at the start.

The film's backing paper can also create drag if it is torn or curled. Always load with the emulsion side facing inward (toward the center of the reel) to avoid scratches from the spiral wires. If the film feels tight or refuses to advance, stop and reposition rather than forcing it.

Common loading mistakes and how to avoid them

The most frequent error is starting the film at an angle. Even a slight tilt causes one edge to ride outside the groove, leading to a kink that shows as a bright surge mark on the negative. Another mistake is holding the film too tightly; a light, relaxed grip lets the reel pull the film in naturally. Finally, loading in a hurry often results in the film jumping the track near the end of the roll, which can cause uneven development or a light leak if the tank is not sealed properly.

If you wear gloves, choose thin lint-free ones; thick gloves reduce feel and make it harder to detect when the film is properly seated.

Step-by-step: loading 120 film on a Hewes reel

Prepare your workspace: Set up your changing bag or darkroom with the reel, tank, and film within easy reach. Ensure your hands are clean and dry, and keep scissors or a bottle opener nearby if you need to remove the film seal. Check that no light leaks into your changing bag before you begin; even a small gap can fog the film.
Open the film and trim the leader: In complete darkness, remove the 120 film from its backing paper. Trim the leading edge of the film so it is straight and square, cutting between perforations if present, to help it enter the reel smoothly. Do not cut into the image area; trim only the blank leader.
Attach the film to the reel's hook: Hold the film with the emulsion side facing you (toward the center of the reel). Slide the leading edge under the hook-on loading device until it catches. The Hewes reel's sprocket system is designed to grab the film quickly when held straight. Confirm the film is centered and both edges are aligned with the spiral grooves before turning.
Load the film with a slight bow: Hold the film edges gently with your thumbs and forefingers, creating a slight upward bow in the middle. Turn the reel steadily; the film should feed into the spiral grooves. If resistance increases, stop and gently flex the film to reseat it. Never force the film; if it binds, back up slightly and try again.
Check the final seating: When the film is fully loaded, the trailing end should sit neatly in the outer groove. Run your finger lightly around the spiral to feel for any sections that have jumped the track. A correctly loaded reel feels smooth and even, with no raised edges.
Place the reel in the tank and develop: Slide the loaded reel into your developing tank and secure the lid. Proceed with your normal development process, ensuring the tank is light-tight before turning on the lights. Double-check the lid is fully seated; a loose lid causes light leaks that ruin the entire roll.

Product facts

Hewes 120 Stainless Steel Developing Reel: Engineered from 316 stainless steel for lifetime use, with a hook-on loading device that catches the film in less than 2 seconds when held straight. The durable construction and quick-catch design reduce loading time and frustration, especially in the dark, while the stainless steel resists corrosion from repeated chemical exposure.
Hewes 120 Stainless Steel Developing Reel