[Robotgroup] Helium

[Gray Mack]

I think it would be neat to try to make the balloons
but the project deadline I have for the balloon lights
is 19 days away so I dont think I have time.

Buying seconds or overage doesnt sound bad, wouldn't
it only be printed on one side and you could make that
the inside or would the printing show through?
-Gray

--- vkonradi <vkonradi at swbell.net> wrote:

> I traded in a bottle of Argon in exchange for Helium
> a while back.  The nice guy at the welding shop
> actually gave me full credit on the Argon bottle, as
> it weighed in more or less full.  The price of
> Helium wasn't too crazy, a little higher than Argon.
>  That was about 6 months ago, when I was filling up
> a smaller toy blimp for my Alex.  As long as we have
> natural gas, we can have helium.  After that, gotta
> mine the sun.
> 
> I looked up heat-seal mylar several years ago and
> found a supplier.  Only catch was I'd have to buy a
> fairly big roll.  Possible exception would be to buy
> seconds or overage, but could be printed with
> whatever.  I'll try to resurrect that connection if
> someone really wants.
> 
> At my last job I bought a huge roll of aluminized
> mylar.  Musta been a quarter mile long, and 4-5 ft
> wide or so.  I was going to make an IR mirror for
> the laboratory ceiling.  But it had no adhesive
> layer to facilitate heat sealing, so was not
> necessarily blimp material.  I bet a friend of mine
> could liberate a hank of that from the lab if it
> would be useful.
> 
> -Vadim
> 
> ... deleted
> 
> I wish we had a good source for that wide roll
> poly/mylar but nowdays the price of helium has gone
> thru the stratosphere if you can get it at all (from
> what I've seen on the news)
> -brooks
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