After I build an electronics project, I never have an enclosure that is a good fit. My solution is to keep extruded aluminum channel on hand and bend up the ends as needed. The result is a very solid box that perfectly fits every time. The cost is about $0.30 an inch which is substantially less than cast aluminum enclosures.
If you are interested, please see
http://rick.sparber.org/AQPB.pdf
Your comments are welcome. All of us are smarter than any one of us.
Thanks,
Rick
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