This clamp has a very limited range where it works well. As long as the items you're clamping are within the walls of the clamp itself, they seem to be able to apply enough pressure to get a good bond. let's say a thin picture frame or something. However, if you're trying to clamp something larger for gluing, it just won't have the clamping force for it. It's very cheaply made from the lowest quality materials you can find. Also, it wasn't exactly square in any direction. Read the bad reviews…