I wonder if anyone here ever used Durafix aluminium brazing rods? They sound like just what I need for constructing frames etc. from stock aluminium bars/profiles/sheet. Currently I use polyurethane glue or those 'crimping nails' (don't know the English word) to join separate parts.
link:
http://durafix.com/brochure/p1.htm
(next page link is very small on the right bottom)