I know that this has been discussed before. One of my fork seals was leaking so I wanted to see if I could clear a piece of debris rather than taking it apart. Many people make the hook tool out of a plastic soda bottle and I have used 35mm film negatives for this job. This time I tried both. The film negative is thinner and I cut it so the cutout squares on the negative work to strip whatever debris is causing the leak. The soda bottle tool is easy to make and in my opinion worked much better. The soda bottle already has the curve to contour the fork and there is no need to bend it into shape as is needed with the film. The soda bottle is slightly thicker so it is a little more difficult to get it between the fork and the seal but once it is in it is much easier to work with. It turned out to be debris and it no longer leaks but from here on I will stick with the soda bottle tool.