|
|
Posted by David Sherman [24.32.202.83] on Thursday, September 24, 2009 at 23:42:04 :
In Reply to: Re: Porous welds posted by Dave Royal [75.81.253.97] on Thursday, September 24, 2009 at 23:35:59 :
Let's see... Not popping very much. Container is about 1/8" thick, as is stove pipe and I'm using 1/8" rod with the big tip on my good Victor torch. When I "re-welded" all the joints I washed them, as you put it, making very sure that I had melted down into the base metal. Base metal was not clean at all (painted), but usually that's not a problem with gas welding as the paint, rust, scale etc just floats off. I have have used coat hangers and even barbed wire off a nearby (collapsed) fence in a pinch, but I agree with you that coat hanger wire is probably high-carbon. At this point, it'd be a ton of work to cut out all the welds that I did with this R45 rod and re-do them with baling wire. Actually, what I have that I'd use isn't bailing wire but it's the old Forest Service telephone wire, #10 soft iron.
This is a strange problem and I've never had it before though I've rarely tried to make water-tight containers. I did weld up a rather complicated manifold out of iron pipe a few years ago and it never leaked anywhere even though it had 100 psi in it.
Follow Ups: