I have to admit when I first got this and tried it, it seemed like it totally didn't work. I even had a hard time getting it into the device. I tried to instantly crimp the portion of the blind that was damaged and it didn't change it. It still looked damaged and bent. I was beginning to think 'what a waste of money.' I went away for a few minutes about to call Home Depot to see if they simply had new blinds in stock. Then I stopped myself and thought I'd better give it at least one last try. This time I held the damaged part in the device at a curve and held it for about 30-40 seconds. When I released it it had made it significantly better this time. Then I did kind of the same thing in three little areas on the same damaged part again to try and clean it up a bit more. I would say that made it better by another 20%. I think the key here is you have to hold the damaged part curved in the device for at least 40 seconds, maybe even pushing your thumb along it, and then kind of focus more on the nuanced parts of the same damage portion to try and clean it up after the first attempt. I would say if you are a patient person and are willing to treat the process as a kind of microscopic surgery to an extent as opposed to a job you can complete instantly then I think you'll appreciate this device. If the blinds are still hanging it's basically a situation of pulling up a chair for a good half hour and getting to work like a craftsman on them. Maybe you can speed up the process as you get good at it but just prepare yourself to treat it as if you were about to carve a small wood sculpture. It is rewarding though once you see them sort of come back to life. To add, this really works best on blinds that have been bent simply at a 90 degree angle rather than those that are actually mangled and bumpy. Like I said with the bumps it really takes a bit of work and nuanced focus to get those looking decent again.
Most honest review (I believe)