Film developing spool

A method of processing strip-shaped photographic material, comprising the steps of providing a spool composed of a core and narrow-spoked first and second end flanges having axially inner sides provided with spot supports which together define first portions of two spiral grooves surrounding the core and axially outer sides, the spokes of such end flanges being separated by cut-outs;

• providing first and second inserts each having a surface arranged to be placed against the axially outer side of the respective end flange and provided with a plurality of plug portions each dimensioned to fit into one of the respective cut-outs and formed with fragmentary turns together constituting a second portion of the respective groove and, in conjunction with the corresponding spot supports, completing the respective spiral groove;
• inserting the plug portions into the cut-outs of the respective end flanges;
• introducing the marginal portions of at least one strip of photographic material into the completed grooves at the axially inner sides of the two end flanges;
• thereafter detaching the inserts from the respective end flanges and thereby withdrawing the plug portions from the corresponding cut-outs, leaving the introduced strip of photographic material held in position exclusively by the spot supports of the two end flanges;
• and subjecting the strip of photographic material on the spool to requisite processing.