I'm not sure...I'll have to measure it, but I think I know what you're getting at. Put a magnet like yours, maybe even a bit stronger, anywhere in the top half and let the metal magnetize itself, thereby making the overlapping ends snap together? I'll definitely give it a try. The magnets come in two packs, so I can experiment on placement and use both if necessary. Plus, rare earth magnets have plenty of uses, so I'm sure I find something else to do with them if I have extras.
