Aluminium foil:
At first I tried it with aluminum foil. This is already easier to demolish the consistency as FH film. So there was no problem and I was able to foil tear as easily as with the tear bar of the original packaging.
FH-sheet:
Now came the test with FH film. No matter how I tried it, the film was either impossible or very difficult to demolish. The cutter bar did not seem to cut properly. I was about to give up when I looked at the cutting mechanism in more detail and made me think about how it should work, anyway. So pulled nochnmal film, pulled the foil tightly and closed the unit completely - * whoosh * - I had a nice cut film.
Conclusion:
In Nachhinnein it is also logical that labberig held FH film not be cut. That would have saved a lot of frustration with a little notice. So if you know how you have to operate the device, it works tadelos. However, the price is a little high, 9.95 euros would be more appropriate.