I've been lucky so far when it comes to cutouts or swarm retrievals, but know eventually I'll need a bee vac. I printed out the besource plans and was thinking about how I would design if I had to from scratch. I been trying to think of a use for the bunch of empty 3 lb package containers hanging around and it seems they would be great to modify and use as inner boxes for a bee vac? Has anyone else tried this? Are there any reasons not to?