Jamaic, I have made cages out of 3mm brass tube bent over a former, buiscuit tin etc
cross bars ends filed with a small round file assembly held together with garden wire
ends joining the hoops fluxed as you go along.
You will need a blowtorch you will never do it with a soldering iron.
You can always file off the excess solder after, use bulldog crocodile clips as heat sinks
if needed. Hope this helps.
John