Curling 8mm film
When film gets old it can start to curl, because it is shrinking. The shrinkage amount will depend upon what type of base the film was made of and in what conditions the film was stored.
Fluctuating temperatures and changes in humidity affect the outside edge of the film, and in time, will cause shrinkage of that outside edge of the film, as seen in this image below.
Don't wait until your film has curled and become moldy - transfer it now!
This outer part can no longer be transferred and will break if a transfer is attempted. Using a special solution of "FilmRenew" helps some film regain elasticity, but the outer third of this film is beyond repair. The inner two-thirds could be helped by soaking the film in "FilmRenew." Still, there is no guarantee what image quality will be achieved.
Here's some curled 8mm film. One third is damaged but some was saved!