DOW 331 epoxy resin hardener?

Discussion in 'Boatbuilding' started by sdowney717, Feb 8, 2017.

  1. sdowney717
    Joined: Nov 2010
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    Location: Newport News VA

    sdowney717 Senior Member

  2. upchurchmr
    Joined: Feb 2011
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    Location: Ft. Worth, Tx, USA

    upchurchmr Senior Member

    Last time I had some guys working for me "experimented" with using another hardener, it started a fire. It was quite a shock. (it was actually just a mistake).

    I'd suggest you just buy the proper hardener.
     
  3. sdowney717
    Joined: Nov 2010
    Posts: 786
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    Location: Newport News VA

    sdowney717 Senior Member

    Actually do you have any idea where to buy that?
    I may have some old hardener came with the DOW 331 resin, but I recall it being yellow and nasty looking, real thick like stiff glue, kinda unfriendly to work with.
    And one of the last things I coated using it, it failed, never properly setup. Maybe does it go bad?

    When I called West Systems. They said old hardener can absorb water and c02 from the air and look awful but can still work.

    If I had barrels of this, they could do something for me, but I only have a gallon I want to use up. They said they would have to experiment, even though their resins are based on DOW 331.
    This DOW 331 is a common basic epoxy clear resin.
     
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