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finishing a hull and hiding blimishes?

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  • Jason Stancil
    Hey- I ve got 2 coats of epoxy on my boat above waterline and i can still see some marks where i grinded off some epoxy runs from the rubrail....... love the
    Message 1 of 6 , Sep 1, 2004
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      Hey-
      I've got 2 coats of epoxy on my boat above waterline and i can still
      see some marks where i grinded off some epoxy runs from the
      rubrail....... love the 80 grit :)

      What is the best way to hide these?
      Another coat of epoxy and sand?
      A thin coat of microballons sanded and then covered with a final
      coat of epoxy?

      I'm planning on three coats of epoxy regardless for sealant followed
      by two coats of primer (the bullseye 123 stuff), then 2 coats of
      some good old white exterior latex. I don't beleive(?) the paint
      will hide them....possibly magnify it(?) Not sure as i haven't used
      either.

      Not looking for a show boat finish just a 20 footer.
      Suggestions appreciated.

      Thanks a bunch,
      Jason.........60 hours to go tops!
    • John B. Trussell
      That 80 grit will leave some scratches. Your options are to try to sand them out with finer grades of paper or to fill them. Filling can be done with micro
      Message 2 of 6 , Sep 1, 2004
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        That 80 grit will leave some scratches. Your options are to try to sand them out with finer grades of paper or to fill them. Filling can be done with micro balloons in epoxy (mixed to a fairly thin consistancy--thinner than peanut butter--and applied in as thin a layer as possible--you are only trying to fill in the scratches--you'll have to sand this smooth too) or some sort of surfacing putty (I usually go through a tube of the red stuff sold at auto paint stores for each boat I build). You can spend a lot of time striving for a "gold plate" finish. I have; but have yet to achieve perfection! At some point, I give in, say good enough, and go sailing.

        John T
        ----- Original Message -----
        From: Jason Stancil
        To: bolger@yahoogroups.com
        Sent: Wednesday, September 01, 2004 7:04 PM
        Subject: [bolger] finishing a hull and hiding blimishes?


        Hey-
        I've got 2 coats of epoxy on my boat above waterline and i can still
        see some marks where i grinded off some epoxy runs from the
        rubrail....... love the 80 grit :)

        What is the best way to hide these?
        Another coat of epoxy and sand?
        A thin coat of microballons sanded and then covered with a final
        coat of epoxy?

        I'm planning on three coats of epoxy regardless for sealant followed
        by two coats of primer (the bullseye 123 stuff), then 2 coats of
        some good old white exterior latex. I don't beleive(?) the paint
        will hide them....possibly magnify it(?) Not sure as i haven't used
        either.

        Not looking for a show boat finish just a 20 footer.
        Suggestions appreciated.

        Thanks a bunch,
        Jason.........60 hours to go tops!




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      • cha62759@traverse.com
        If you are going to put a third epoxy coat do it now but don t sand it with 80 grit. Wash it well and sand with 100 or finer just to take off the gloss. The
        Message 3 of 6 , Sep 1, 2004
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          If you are going to put a third epoxy coat do it now but don't sand it
          with 80 grit. Wash it well and sand with 100 or finer just to take off
          the gloss. The 123 will fill the finer scratches and recoating with
          123 is a hell of a lot cheaper than epoxy. If you are over exuberant
          about your sanding you will find than you have areas with almost no
          epoxy. Sand most of the first coat of primer off then recoat and sand
          for finish only.
          Bob Chamberland
          What is the best way to hide these?
          > Another coat of epoxy and sand?
          > A thin coat of microballons sanded and then covered with a final
          > coat of epoxy?
          >
          > I'm planning on three coats of epoxy regardless for sealant followed
          > by two coats of primer (the bullseye 123 stuff), then 2 coats of
          > some good old white exterior latex. I don't beleive(?) the paint
          > will hide them....possibly magnify it(?) Not sure as i haven't used
          > either.
          >
          > Not looking for a show boat finish just a 20 footer.
          > Suggestions appreciated.
          >
          > Thanks a bunch,
          > Jason.........60 hours to go tops!
        • Jeff
          I think it also depends on how your going to finish the boat. I use 60 grit only but paint with a roller so getting a super smooth finish is a waste of time.
          Message 4 of 6 , Sep 2, 2004
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            I think it also depends on how your going to finish the boat. I use 60 grit only but paint with a roller so getting a super smooth finish is a waste of time. Using a random orbital sander does wonders for not leaving scratches even with 60 grit unless you put a lot of pressure down on the sander. Using several coats of primer and two or three coats of top coat paint will fill all the minor scratches left by the sander. Plus the roller marks are leave a slight dimpled finish that hides the minor sander scratches completely.

            If your going to spray paint, then all bets are off and the best thing is to finish with at least 100 grit and use some sort of filler.

            Jeff


            [Non-text portions of this message have been removed]
          • Rex and Kathie Payne
            ... off in a ribbon if the scraper has a good burr.
            Message 5 of 6 , Sep 2, 2004
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              ---A cabinet scraper will remove runs more easily than sanding. Peels them
              off in a ribbon if the scraper has a good burr.
            • juan negron
              I have used a Sandvik long handle scaraper with success to remoce runs and othe large imperfections.
              Message 6 of 6 , Sep 4, 2004
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                I have used a Sandvik long handle scaraper with success to remoce runs
                and othe large imperfections.
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