Sheet Metal Joining: Crimpable or Snap Fit?

[DylanB]

I'm looking to assemble two sheet metal parts (in the manner a bit like joining two halves of a box) in a simple manner that is either crimpable or some sort of snap fit. I have not seen any snap fit sheet metal designs and I wonder if there is any sort of standard practice (the aluminum sheet metal will be ~1/32-1/16" thick. Otherwise, is there a good way to create crimpable flanges in order to join these parts?

 

[turbo]

Can the parts be run through a (stone-age) crimper in which the edges are progressively forced into compliance and folded and mashed? My father is a retired sheet-metal mechanic and I have build a lot of stuff over the years just cadging stuff from him and using his tools.