When hanging it up, don't pull down on it at all. My child pull down on it and it seems that the string is sandwiched between the two pieces of wood and a little bit of glue is added.I didn't know it was only the hot glue holding it in, but the string used isn't tied around any nails or screws. It helps strongly, but not child proof by any means.I had to take a hammer a couple of nails into the wall, just to hold it up. The material is great though, looks like that can hold up to some abuse.See full review