Paging Tunnels to the white courtesy phone please

Discussion in 'Fiberglass and Composite Boat Building' started by 13AL, Jun 24, 2012.

  1. 13AL
    Joined: Oct 2008
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    13AL Junior Member

    In a thread somwhere that I cannot find, you had spoke breifly about using a peel ply or release film on top of you hand layups to absorb excess resin. Could you elaborate on this method. I could be way off base as I am going from memory here. If any one else has or is using this method, fell free to chine in. Thanks in advance, Dan
     
  2. Tungsten
    Joined: Nov 2011
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    Tungsten Senior Member

    I just did some pieces by hand,i'm using the cheaper peelply so the thinest.i rolled it after to get out the bubbles.i weighed it after cure.it was 1.6 grams more a 2^ft.
    When i rolled it the epoxy came to the surface and soaked the peelply but it just soaked back in again.No doubt a thicker ply would have absorbed more.
    but not much.
    i was also able to move excess resin around and remove it in spots i had too much.
    hope this helps as im just learning also.

    one thing it did was remove the air leaving i nice flat surface, i will be using it everywhere now.
     
  3. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    That would be Peelply he was talking about.

    However, if you use it, or even clear plastic, the biggest part of the result is not so much the absorption of excess resin, but more that the excess resin can be squeegeed or brushed to the edges, and out off the work.

    I was doing some small patches last week, using a mylar sheet, and with a squeegee, you almost get a vacuum bag experience. As you squash the plastic from the middle, the natural air pressure ensures that the film is pressed onto the cloth, and the air wont rush in again as the viscosity ( sticky thickiness) of the epoxy in the rest of the cloth prevents the air from bubbling back in.

    You end up with the minimum resin required for the glass, and a really smooth and even surface.

    If you want to save even a little bit of sanding, try and get the peelply or mylar or plastic sheeting in the least creased condition you can. Also, avoid creating creases from the pressure of the squeegee or roller or whatever.
     
  4. tunnels

    tunnels Previous Member

    Thats the best discription i seen . !the peel ply does not absorb resin it allows the surplus resin to pass through and out onto the surface as also stated it need to be just as it came off the roll smooth and wrinkle free as possible yes rollling plastic over the top and resin to the sides is as close as you can possibly get to the resin content of infussion myself i prefer better than infusion 1! There is a point where the lack of resin is not helping the glass or what ever at all . i much prefer hand laid with peel ply or plastic over the top . PEEL PLY for repair work is majic and you can see immediatly of the glass is very close to the same level as the surrounding area . the plasic method also allows to be able to roll glass around very tight corners and edges !.
    at the end its what you want to do . personally i think resin infusion is highly over rated and would never advise any one to use it any where .
    Saving weight is completely up to the person doing the job and the type of materials being used and the way they are used , Weight saving in any boat is a myth and is saved in all the wrong places . iweight saving or lightening is a complete package deal not just here and there .in any boats its everything that is made and used in the boat . big boats are rediculas . skimp on resin and glass to save weight and then fit a huge genset that can power a small country . and fitting every possible gadget thats is really just to impress the neighboures in the marina !! so whats the point ? like i just said its everythin that got to be taken into consideration . Go play with race boats and you will very quickly get the meaning im talking about . specially yachts !! if it dosent serve any purpose to make the boat go faster then dont do it ! leave it out . :D
    Is that something like you wanted to hear??:confused:
     
  5. Frosty

    Frosty Previous Member

    I do something similar if I need to bog up a large hole. I mix up the filler then slam it into the hole, then cover it with news paper and smooth it out with my hand till it feels flat. Its not a perfect finish but after sanding off the news paper your well on the way. It should only need a skim after that.
     
  6. tunnels

    tunnels Previous Member

    written in stone !!

    what ever spins your wheels !!
    news paper sounds cool and would be easy to sand off , some plastics winkle up when introduced to fillers and bogs that have styrene so news paper sound much better . will remember to have it chiseled on my tomb stone !!
    Frosty said ####### !!:eek:
     
  7. 13AL
    Joined: Oct 2008
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    13AL Junior Member

    Tunnels, I asked for your methods and seems like thats what I got so thanks!!

    Frosty, your method worked pretty well today so thanks to you as well.
     
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  8. tunnels

    tunnels Previous Member

    Methods for what in particular ??:?:
    Simplicity is the key to all things, if its simple it works well:) when things get complicated then the trouble starts :(
     

  9. 13AL
    Joined: Oct 2008
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    Location: Sunny California

    13AL Junior Member

    No Kiddn!!
     
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