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Prindle 18 Hull Material  Bottom

  • Finally getting this ol’ boat the tic it’s been waiting for. Daughter and I are going to “social distance” and learn some fiberglass at the same time...

    This project will take care of hull delamination and a transom repair.

    I used the drill-n-fill method on a Hobie 16 in the past, but would like to replace some core material this time to remedy curiosity and learn something from my mistakes....

    This boat has a foam core. Anyone know what was used for manufacture and recommend a replacement material. Looks like it might be a half-inch urethane foam sheet, but my expertise is starting from zero!

    Thanks for any recommendations!

    Knt
  • http://www.uscomposites.com/foam.html
    These guys are good. Not a source for sheet foam apparently.
    https://www.3accoremateri…-foam/airex-c70-pvc-foam
    I have used this foam before, good stuff.
    http://www.mertons.com/Floatation/scored_foam.html
    No experience with this product.
    search airex foam



    Edited by gahamby on Mar 29, 2020 - 03:24 PM.

    --
    '82 Super Cat 15
    Hull #315
    Virginia
    Previously owned: '70 H14, '79 H16, '68 Sailmaster 26, '85 H14T
    --
  • If in doubt or unsure, you can go with a higher grade/strength. All of my F25C core replacement done with Corecell. Try or keep an eye on Noah's Corecell discount bin: http://www.noahsmarine.com/corecell/

    James
    F25C+
    H17+
  • Don't feel bad about not using foam core replacement for small jobs. There is plenty of floatation in your Prindle, and the decks are solid fiberglass.

    --
    Sheet In!
    Bob
    _/)_____/)_/)____/)____/)_____/)/)__________/)__
    Prindle 18-2 #244 "Wakizashi"
    Prindle 16 #3690 "Pegasus" Sold (sigh)
    AZ Multihull Fleet 42 member
    (Way) Past Commodore of Prindle Fleet 14
    Arizona, USA
    --
  • I would look into using Divinycell foam for core replacement. Probably the “scored” version if you need to conform to significant curvature.

    sm
  • Thanks for the info! I’m sure it would be fine to leave out some foam, or even re-attach to the old foam. Just thinking I’ll cut and replace some for education and curiosity. The foam piece I cut out is between 1/4 and 1/2 inch thickness. My plan is to buy 1/4 inch and build up, however does the foam shrink with age and deterioration? Undecided if I should buy quarter or half-inch foam and which type foam to try....

    Thanks for your inputs!

    Knt

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