04-03-2013, 12:49 AM
Get some Engelhard Ultraflux, and use something like Aufhauser silver alloy A56-T or similar. Try to avoid the cadmium bearing alloys if you can. If you have trouble sourcing this stuff, hit your local HVAC house and get silphos or one of the copper/phosphorous alloys. Plenty strong, but you need a 0.002/0/003 gap or so. And clean. Acetone is good for cleaning.No side effects, but don't use wife's nail polish remover, it has oil content. Don't make the two surfaces to be joined too slick. A 16 Ra finish won't bond as well as a 125 Ra, so rough it up a little if you have to polish it to size.