John,
I had a few batches of precisely-cut 1/4" thick aluminum heatsink parts silver-soldered into aluminum power supply housings for military aircraft back in the '80's. Purpose was maximum heat transfer within the smallest possible package.
I left it up to a vendor who didn't bother us with the details of the operation, but the finished assembly was clean looking iir, and said to be strong.
David Snyder
Auburn, CA usa
> At 02:27 PM 8/8/06 -0700, dddd wrote:
>
>>Silver-solder can be used on aluminum without melting the part
>>however.
>
> Really? What flux would you use? I've used silver solder to repair gold
> jewellery using regular Handy Flux and it would be great to be able to
> silver solder aluminum. I have some low temperature aluminum welding rod I
> once bought at a trade show where the salesman was using it to weld
> aluminum beer cans with a propane torch. I tried welding a broken skeg
> back
> onto an outboard motor with it, but it snapped off the first time it got
> stuck in the sand.
>
> John Betmanis <johnb@oxford.net>
> Woodstock, ON Canada