Use foam core and plywood in a catamaran hull

Discussion in 'Multihulls' started by Tchamo, Apr 7, 2019.

?

is it possible to combine foam core and plywood in a catamaran hull. using foam core on the bottom

  1. yes is possible

    6 vote(s)
    85.7%
  2. it is not possible

    1 vote(s)
    14.3%
Multiple votes are allowed.
  1. trip the light fandango
    Joined: Apr 2018
    Posts: 268
    Likes: 48, Points: 28
    Location: Rhyll Phillip Island Victoria Australia

    trip the light fandango Senior Member

    Polyurethane foam is what I have experience in, the most common in off the beach cats and surfboards.. The stuff you are talking about was well out of my price range but sounds fabulous if it can be shaped and sanded, forgetting my station..ha. and I wasn't accurate enough. I'm not sure why you would suggest, "'Drain holes' as such in foam would not work as you'd need one for every microscopic cell", rather pedantic, and I the opposite, it turns out; that is because I was referring to my experience with polyurethane, not high density closed cell foam,
    I picked up a copy of a little book printed in the 60's of all the small off the beach type crafts available, all made of marine ply I think, but that was in the early 70's from a "white elephant jumble sale" I think they were called, it stirred my imagination, I don't still own it.
     
    Last edited: May 18, 2019
  2. W17 designer
    Joined: Oct 2010
    Posts: 140
    Likes: 37, Points: 28, Legacy Rep: 21
    Location: Vermont, VT

    W17 designer Senior Member

    TTLF: "I'm not sure why you would suggest, "'Drain holes' as such in foam would not work, as you'd need one for every microscopic cell", rather pedantic."

    I was just clarifying, as you had mentioned 'adding drain holes' to solve your issue with PU foam and water. But to 'drain' any foam that is not closed cell, would indeed require 1000's of microscopic drains (1 per cell), but we both know how impossible and crazy that idea is .... hence my point that it's not workable. That was all. Sorry if I offended you in any way, certainly not my intention.
     
    Last edited: May 18, 2019

  3. trip the light fandango
    Joined: Apr 2018
    Posts: 268
    Likes: 48, Points: 28
    Location: Rhyll Phillip Island Victoria Australia

    trip the light fandango Senior Member

    Fair enough and thanks W17.
     
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