Epoxy - Low spots/dimples

Discussion in 'Fiberglass and Composite Boat Building' started by andysailor, Dec 29, 2017.

  1. andysailor
    Joined: May 2017
    Posts: 37
    Likes: 2, Points: 8
    Location: Sweden

    andysailor Junior Member

    After sanding I still have some low spots. Would prefer to not sand to much of the fiberglass. If I put filler would that be a bad way to go because I cant sand there?
     
  2. Ike
    Joined: Apr 2006
    Posts: 2,092
    Likes: 140, Points: 63, Legacy Rep: 1669
    Location: Washington

    Ike Senior Member

    I sounds like you have the "bubble" problem. Epoxy will bubble like mad if you mix too much air into the resin while stirring it, or you leave it in direct sunlight, or if you put in too much hardener (part b), or for other reasons. You could put another layer of resin, mixed slowly and allowed to set inside a building or in the . But if you don't want to do that, certainly you can fill the holes with filler. I have done that, but the best thing is to simply avoid the bubbles.
     
  3. rwatson
    Joined: Aug 2007
    Posts: 5,506
    Likes: 210, Points: 63, Legacy Rep: 1749
    Location: Tasmania,Australia

    rwatson Senior Member

    Filler of course - as you cant guarantee a perfect thickness when applying epoxy. - unless you use Peel Ply, or thicker mylar, which enforces a uniform surface.
     
  4. pauloman
    Joined: Jun 2010
    Posts: 258
    Likes: 10, Points: 18, Legacy Rep: 151
    Location: New Hampshire

    pauloman Epoxy Vendor

    basic no bush marine epoxy is the only marine epoxy with bubble breakers in it - for situations like this. Its cold weather cure option good down to about freezing
     

  5. PAR
    Joined: Nov 2003
    Posts: 19,133
    Likes: 465, Points: 93, Legacy Rep: 3967
    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Some images (pictures) of the areas affected and/or a better description of what you're experiencing is necessary, to properly ID what is happening. As mentioned above, epoxy and sheathing is more about technique and procedure, then the actual goo employed. Now that the deed is done, there are options for the fix, but which one requires a little more description.
     
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