How to Load and Use a 35mm Reloadable Cassette

Quick Answer

To use a reloadable 35mm cassette, load your bulk film into the cassette in complete darkness, then advance the film to the take-up spool before closing the light trap. This guide walks you through each step to avoid wasted film and light leaks.

Step-by-Step: Loading Your Reloadable Cassette

1. Prepare Your Workspace in Total Darkness: Set up a bulk film loader and your reloadable cassette in a completely dark room. Load the bulk film into the loader according to the loader’s instructions, ensuring the film spool is firmly seated. Close the loader’s light trap and turn off all lights. Check for any light leaks in the room (e.g., under doors) before starting.
2. Open the Cassette and Attach the Film: In darkness, open the reloadable cassette by separating the two ends (if it’s a snap-together design) or by sliding off the cap. Pull out the spool and insert the film leader into the spool’s slot, making sure it is securely hooked. Wind the film a couple of turns to secure it. Ensure the film is not twisted around the spool; it should lie flat.
3. Insert the Spool into the Cassette: Slide the spool with the film attached into the cassette body, aligning the spool’s protruding end with the cassette’s opening. Push the cap back on until it clicks or fits snugly. The film should now emerge from the light trap slot. Check that the light trap (the velvet or felt slit) is not misaligned; it must cover the film slot completely.
4. Advance the Film to the Take-Up Spool: In darkness, use the bulk loader’s crank to advance the film into the cassette. Load the cassette into your camera and advance the film a few frames until the counter shows a number (e.g., 1). This ensures the film is properly threaded and removes any exposed leader. If the film doesn’t advance, the film may not be attached to the spool; reopen and recheck.
5. Close the Light Trap and Test for Smooth Movement: Once the film is loaded, close the cassette’s light trap (if it has a separate switch) or ensure the felt slit is sealed. Gently turn the spool to confirm the film moves smoothly without resistance. If it feels stuck, the film may be caught on the cassette’s edge. A smooth, slight resistance is normal; a hard stop means something is wrong.

Recommended Reloadable Cassette

• ACI 35mm Reloadable Plastic Cassette For Bulk Film: The ACI 35mm Reloadable Plastic Cassette is a reusable plastic cassette designed for bulk film handling. Its plastic construction is lightweight and durable, making it a budget-friendly option for photographers who want to roll their own film without buying metal cassettes.