[Robotgroup] Helium

[brooksdesign]

  I've noticed that water seems to remove the metalic coating fairly easy and since the printing is on top of that I would think it all would come off leaving a clear mylar, not as cool as the shiny surface but then again that shinyness starts looking kinda trashy after being rolled up and packed away a few times.
  Awhile back I looked at what was the biggest bang for the bucks and time we have spent on bots over the years and the blimps were the easy winners. The real problem is finding suitable rooms for testing and performing. 
-brooks

-----Original Message-----
>From: Gray Mack <gray_mack at yahoo.com>
>Sent: May 1, 2008 12:17 PM
>To: The Robot Group Mailing List <robotgroup at puremagic.com>
>Subject: Re: [Robotgroup] Helium
>
>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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>
>
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