[TheForge] Angioplasty?

[Peter Fels And Phoebe Palmer]

Hi Bruce;
I tried ,but chickened out at about 125 PSI...not much effect.
With a compressible medium ( air) i figured it had become more of 
a potential explosion hazard than i was willing to risk.
I've run water at about 300# on annealed , welded up sheet 
sandwiches ( ala E. Brim) but the effect was limited in 3-D 
stretching..though the folding/wrinkling  was interesting.
Might be better on copper.
A non compressible medium sucks the heat away too quickly to 
work, it seems.
Funny problem. eh?...pete

Bruce Freeman wrote:
> Pete,
> I take it you want to swell tubing?  To what end?
> I'm thinking of inflation:  Seal both ends, add a pipe
> fitting to one, pressurize with air, and heat with a
> torch where you want it to swell.
> Bruce
> NJ
> 
> --- Peter Fels And Phoebe Palmer <artgawk at thegrid.net>
> wrote:
>> Just to start another thread....I wanna do a sort of
>> angioplasty 
>> on hot steel pipe. Any idea how , short of
>> explosives?...pete
> 
> 
>        
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