Brazing thin aluminum

"Don Foreman" wrote: I had good luck with a project today. ^^^^^^^^^^^^^^^ I don't blame you for posting this. Neat job. Only thing I would have done different is: That little hot spot at 3 o'clock--I would have turned it so it doesn't show, and failed to mention it. :-)

My wife sez every quilt has a "humility patch". Most of my shop projects also have a humility spot or two. At least the holes match up with the flange on the blower!

Very nice! How do you plan to join the cone to the 3" ducting?

Ted

Heh. Every time I point out the humility patch on one of ms. Mulligan's quilts I get clobbered in the head.

Don, was this the "AeroBraze" that is sold via the Tinman's web page, and if so, did you use the coated rod, or the rod and separate flux?

Nice work BTW.

Jim

Yup, AeroBraze, bare rod with separate flux.

I'm wondering that myself. The flue pipe is corrugated on one end, so I may just jam it into the cone and tape the joint. I may try brazing a cylindrical collar on the end of the cone, but if jamming and taping work, that's probably what I'll do.

I think I know what I want for saint pat's day....!

Jim

Don't forget the didymium filter, unless you already have glass-blower's glasses. (Why do I suspect that you might? )

Jamming the corrugated end of fluepipe into the cone worked great, won't even need tape. It's wedged in there tight.

I just learned that the flux in the fluxcore rod is noncorrosive, while the separate flux is corrosive. FWIW.

I had success soldering aluminum using the oil method: put a puddle of motor oil over the area to solder, scratch vigorously under oil, apply solder. I only needed to wet few square milimeters, but it worked beautifully