How do I attach a metal latch to a metal box without drilling or welding?
If you are really ambitious, you could try J-B weld, find it at an “advanced auto” or similar store. This is a 2-part epoxy resin that you have to mix. Yes, its more messy, and you are stuck with the leftover it you only want to use a small amount. Another option is Gorilla Glue super glue, I’ve been happy with this brand for many projects, although I’ve not not used it metal to metal myself, but its says it works. The most important step in any glue project is surface preparation. They all talk about making sure they are free of oil and dirt, and to “rough it up” a little with a medium grit sandpaper. Follow this the best you can! For small areas, like the surface of the box where you want the latch to attach, precision is important to not scuff up the rest of the surface. I would use my dremil tool to get at it, but tearing off a very small piece of sanding paper and using your finger will work if you are careful…
