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Author Topic: crystallized epoxy  (Read 976 times)

Offline Russell Shaffer

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crystallized epoxy
« on: February 24, 2014, 02:40:52 PM »
  I have some that looks like old honey so I did a little research.  Dow Chemical says to warm it up and use it, so I'm going to try it.  For anyone who wants the whole Dow statement, look here:

  http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_00cb/0901b803800cb76b.pdf?filepath=/296-01652.pdf&fromPage=GetDoc

Edit:  I heated it to 160F in a pan of water and it seems to be fine.  Totally "decrystallized" and looks fine.  Took very little time.
Russell Shaffer
Klamath Falls, Oregon
Just North of the California border

Offline john e. holliday

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Re: crystallized epoxy
« Reply #1 on: February 25, 2014, 09:50:21 AM »
Hope it holds up and cures like it should.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Online Gerald Arana

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Re: crystallized epoxy
« Reply #2 on: February 25, 2014, 10:32:54 AM »
Your epoxy will work just fine.............

I have a couple gallons that get all "white" and a little heat  (on the stove top) brings it back to clear and useable. The catalyst doesn't change much.

It's only in full size aircraft that this practice is a No No or so my full size aircraft building buddy says.

Cheers, Jerry

Offline Dennis Saydak

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Re: crystallized epoxy
« Reply #3 on: February 25, 2014, 05:37:28 PM »
I've stopped using the hobby store type epoxy for that reason. I have several gallons of Fullers Resiweld epoxy, which was used by the homebuilt aircraft guys that is now 36 years old in the jugs. I've used it several times lately and it is a good as the day I bought it. It takes a few hours to get set up and 24 hours for full cure. It is not brittle like the cheaper stuff that crystalizes.
Just when you think you're getting ahead in the rat race.....you find the rats just get faster! MAAC 13120L

Offline FLOYD CARTER

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Re: crystallized epoxy
« Reply #4 on: March 03, 2014, 02:34:03 PM »
8 seconds in the microwave warms both bottles of epoxy and makes it much easier to pour and mix.  A pan of hot water takes too long.

F.C.
90 years, but still going (mostly)
AMA #796  SAM #188  LSF #020


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