REFLECTOR: Hardening Hardener

[Brooke Wolf]

I think you might be right Ken.  After I get back from OSH I will try  
to heat up my 2 year old mush and see how that works.  If I find it  
unsuitable, I will enjoy working with new stuff that I will order a  
little at a time!

Brooke
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> From: KMis178813 at aol.com
> Date: July 25, 2009 8:57:20 PM EDT
> To: reflector at tvbf.org
> Subject: Re: REFLECTOR: Hardening Hardener
> Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org 
> >
>
>
> Brooke
>    I have not worked on my own project for quite a while now but I  
> have been using the hardener from time to time for other projects. I  
> found that the stuff in the Hot Box gets gooey and is not very  
> useful. The stuff at room temp will recover with heat but still  
> remains thick. I recently did some projects at the factory only to  
> notice how nice it is to work with fresh stuff. New stuff is much  
> thinner and makes the cloth absorb quicker with less effort and also  
> lighter. The cost of new hardener compared to everything else we do  
> is cheap. Order in small quantities as you need it and it will  
> always be fresh?? I'm not saying the old stuff is not useable, just  
> the fact that I will not use the old stuff on my plane because of  
> it's properties. FWIW
>        Ken
>
> In a message dated 7/25/2009 5:39:04 P.M. Eastern Daylight Time, bwolf1 at tds.net 
>  writes:
> I know this has been addressed before on this forum, but I am  having
> a problem with hardening hardener.
>
> All of my hardener is less than 2 years old.  It is from the Velocity
> Factory.  I keep some hardener in a 85 deg box.  I have been away from
> my project for 3-4 months.  Now, I noticed that it is getting a little
> thick, somewhat like a gooey tar.  I  tried heating it by putting the
> gallon jug (with less than a quart of hardener in it) in water at 150
> deg.  I let the hardener get to about 130 deg for about 15 minutes.
> The heating certainly made it more viscous, but as it cooled it got a
> little thick again.....but not as thick as before.  I don't have much
> confidence in the heating trick.  What did I do wrong?
>
> Just for grins, I checked on two jugs of hardener which have been
> sitting in my basement for 2 years.  The temp down there stays a
> pretty constant 70 deg.  Much to my chagrin, both jugs seem to have
> solidified into a crystalline mush.  Any ideas?!!
>
> Brooke
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