Film Rewind Knob for Canon AE-1 Program, Compatible Replacement Knob, Reuses Your Original Screw, 3D Printed PETG, Black

Replacement film rewind knob for the Canon AE-1 Program 35mm SLR. KNOB ONLY - the screw is not included. You reuse the small original screw that held your old knob on the rewind shaft. If your screw is missing, you need the genuine Canon rewind knob screw (sold separately by camera parts sellers). Common M3 screws with 5.5 mm heads do not fit the screw seat. Fits: Canon AE-1 Program. Does NOT fit the original Canon AE-1 (its rewind shaft and knob are different). Please check your camera model before buying. - Grip knob without the fold-out crank: rewind the film by turning the knob. - The screw goes in from the top: its head sits in a seat at the bottom of the opening, like the visible centre screw of the original knob. - Size: 21.8 mm diameter, 9.1 mm high. - Material: PETG, black. 3D printed (FDM), so fine layer lines are visible. How to fit 1. Drop your original screw into the opening on top of the knob so that its head drops into the seat at the bottom. 2. Open the camera back and hold the rewind fork still (for example with a screwdriver shaft through the fork). 3. Put the knob on the rewind shaft and turn it the same way your old knob tightened, until it is snug. Do not overtighten. 4. To remove it later, lift the knob slightly while you turn it. Aftermarket part, not made by or affiliated with Canon. Product images are computer renderings (CG), not photos. Design credit: Grip, top shape and screw access: our own design. The screw seat and bottom face follow "Canon AE-1 AE1 Program Rewind Knob" by Grinch_ (thingiverse.com/thing:6313982, CC BY-SA), re-modelled by us. Not endorsed by Grinch_.