Releasable attachment for connecting a film strip to a film cassette spool

A method of releasably attaching a film strip to a film cassette spool having a spool axis and comprising:

• a body portion having a first slot formed therein for receiving a film strip, an inner body portion located inside the body portion and which is rotatable relative thereto between a first position and a second position, and an attachment means located in the first slot for attaching the film strip to the spool, the attachment means comprising a tongue portion carried by the inner body portion, said tongue portion being formed at an edge of a second slot formed in the inner body portion, and wherein said second slot being substantially larger than said first slot formed in said body portion, characterized in that the method comprises the steps of:
• a) inserting the film strip into the first slot formed in the body portion of the cassette spool;
• b) rotating the inner body portion relative to the body portion so that the tongue portion engages the film strip;
• and
• c) reversing the direction of rotation of the inner body portion relative to the body portion to release the film strip.