[python] Re: brazing

If the _wire_ is what's giving the strength of the joint, one might as well go 
for mere soldering, which would definitely wet out, likely be cheaper and be 
possible at lower temps.

The wikipedia article and the mentioned brazing book are good on this, I think, 
but the technique suggested here is a low-tech, non-conventional one, whose 
strength seems to me to hinge on the wire wrapping. I suspect that it might be 
okay for a while, but that the periodicity of  tortion loading will adversely 
effect system integrity leading to relatively sudden catastrophic failure, 
which may or may not include sufficient visible warning signs to avoid accident 
while underway. My suggestion: don't use it for anything beyond proof or 
concept or geometry.

I'm not competent to comment on strength issues, however.

Since my degrees are in languages and theology, it might be good to get one of 
the house engineers to comment. ;-)

ron


> -----Ursprüngliche Nachricht-----
> Von: python@xxxxxxxxxxxxx
> Gesendet: 21.11.07 21:41:13
> An: python@xxxxxxxxxxxxx
> Betreff: [python] Re: brazing


> 
> Won't the wire prevent the brass from getting to the tubes to be joined,
> particularly at the joint itself?  With epoxy and nylon, you can put the
> epoxy on first, and then embed the cord in it, but that's not going to
> work for brazing. 
> 
> On Wed, 2007-11-21 at 09:00 -0500, brian smith wrote:
> > Wild ideas strike me while on my actionbent recumbent.
> > What are the pros and cons of lashing up the frame of a python with 
> > clean steel wire?
> > In some wood structures ...... I've made very strong permanent joints 
> > with multiple turns of fine braided nylon cord all embedded in epoxy.
> > So what about the same principle for metal?
> > After appropriate preparation fix the surfaces to be joined with many 
> > tight turns of wire then flow he brazing metal into the strands of wire.
> > Tho oxy-acetylene is optimal for brazing the garage constructor might 
> > find the high temp bottled gas OK and a whole lot cheaper than all the 
> > gear needed for O-A brazing.
> > The wire might also be used to avoid having to make elaborate jigs to 
> > hols all in place while welding or brazing.
> > I toss this up without having any direct experience.
> > Warmest regards to all who make pythons,
> > Brian in SC USA
> > 
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