[TheForge] OT no more, really mom!

[Peter Fels And Phoebe Palmer]

Starting with 2 edge welded pieces ( Elizabeth's idea was 
brilliant and ballsy), at a jolly yellow heat, The form puffs 
right up and some amount of stretching ( buldging) occurs....but..
It seems that once you reach a round cross section, it requires a 
whole lot more pressure to get much more stretching.
I've also tried spot heating with a torch which works to localize 
the effect....but again, once i reached a round cross section 
continued heating just lead to a perforation. It's even 
surprisingly difficult to pop out small dents that way.
Perhaps i chickened out too soon...the prospect of very hot 
flying steel fragments kept growing in my mind as i pushed the 
heat and pressure upwards.
Anybody had a different result?
I really like steel inflatables....pete

Tod Estes wrote:
> Yeah, xactly that, matter of fact I was thinking of her pillows when I wrote
> that. I am not sure how hot the metal has to be; or how much control you can
> get with that technique. I have never tried it but it is on my list of things
> to do one day.
> Quoting ries <ries at riesniemi.com>:
> 
>> Seems like Tod has the right idea- weld one end shut, weld in a short
>> piece of 1/8" pipe on the other end, then screw in a quick change air
>> hose fitting.
>> Get the whole thing nice and toasty in the forge, then inflate.
>> Much like Elizabeth Brims pillows, I cant see why this wouldnt work.
>>
>>
>> Ries Niemi
>> Industrial Artist
>> http://www.riesniemi.com/
>>
>>
>>
>>
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> 
> 
> Tod Estes
> 
> People do not care about how much you know
> until they know about how much you care.
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