REFLECTOR: Hardening Hardener

[KMis178813 at aol.com]

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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