Fish eye

Discussion in 'Fiberglass and Composite Boat Building' started by 13AL, May 6, 2009.

  1. 13AL
    Joined: Oct 2008
    Posts: 44
    Likes: 1, Points: 0, Legacy Rep: 23
    Location: Sunny California

    13AL Junior Member

    Hi all from Nor Cal, Had a quick question (if there is such a thing) regarding a fisheye problem we encountered in the shop yesterday. Just finished a small Transom repair on a customers Drag boat and wanted to give the floor a new shine as well (because things were going way to easy and our profits on the job were going to be way to high). Sanded out any imperfections and flowed out a thin coat of vinyl ester over the floor, looked good for about 5 min. and then (as we all were expecting) problems. Fisheye in no particular pattern or order. This morning the floor was resanded and ready to recoat, any thing we overlooked? Our air system is squeeky clean as is the shop / boat. use of wax and grease remover mabey. Any advice will be helpful as our profit margin is now a little more in check. Thanks, Dan
     
  2. pescaloco
    Joined: Feb 2006
    Posts: 301
    Likes: 10, Points: 18, Legacy Rep: 81
    Location: so. california

    pescaloco Senior Member

    My guess, since it's a work boat you had oil or hydraulic fluid contamination.

    If I was going to do it I would clean it with mek or like then reclean with 2 rag meathod, then sand it, reclean it, then repair it.
     
  3. jonesg
    Joined: Oct 2008
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Mass

    jonesg Junior Member

    old time formulators added detergent to reduce fisheye, modern additives are basically the same thing, an emulsifier , and soap is a great emulsifier.
     
  4. Kaptin-Jer
    Joined: Mar 2004
    Posts: 570
    Likes: 18, Points: 0, Legacy Rep: 206
    Location: South Florida

    Kaptin-Jer Semi-Pro

    Pescaloco is correct, sanding will not clean contaminates. MEK, alcohol, water- 3 or 4 times. Solvents are cheaper than paint.
     
  5. tunnels

    tunnels Previous Member

    Go and find a flooring company that uses polyurethane on wood floor and ask for the dispersant liquid they use in poly !, it works a treat . Just a few drops and no more fish eyes !! dont know why its not in everything !!:D
     

  6. barks
    Joined: Jun 2009
    Posts: 5
    Likes: 1, Points: 0, Legacy Rep: 39
    Location: Sydney, Australia

    barks Junior Member

    classic symptom of surface contamination. Clean with MEK and tac rag and try again. De greasers on its own is no good.
     
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