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Gurit PVC Stuctural Foam and M80 (SAN) - 4'x8' or Cut To Size

Discussion in 'Marketplace' started by captainmurph, Nov 21, 2016.

  1. captainmurph
    Joined: Dec 2015
    Posts: 9
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    Location: Shelbyville, MI

    captainmurph Junior Member

    I have purchased a large lot of structural foam board and will have surplus beyond my project needs. The M80 is only available in 6mm or 19mm. Here is general information and a data sheet.

    The green PVC is available in thicknesses from 1/2" all the way to 2". Here is general information and a data sheet.

    I'm in West Michigan. If you want full 4x8 sheets, you can pick up here or I can arrange to deliver within 300 miles. I can cut and ship in whatever sizes you need with shipping charges calculated on weight and size.

    Contact me with your needs and I'll give you a firm quote.

    Greg Murphy
     
  2. fallguy
    Joined: Dec 2016
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    Location: usa

    fallguy Senior Member

    Can this be used without vacuum bagging or is that unheard of?

    How can plywood be attached to the M80 19mm, for example, if the M80 is in the horizon and the plywood on the vert, say for cabin sides and the M80 for deck, or is that wacky?
     
  3. captainmurph
    Joined: Dec 2015
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Shelbyville, MI

    captainmurph Junior Member

    Can this be used without vacuum bagging or is that unheard of?

    How can plywood be attached to the M80 19mm, for example, if the M80 is in the horizon and the plywood on the vert, say for cabin sides and the M80 for deck, or is that wacky?


    Yes, I've used this extensively without vacuum bagging and it works fine. In fact, I've even made up semi-finished sheets with glass layers on both sides and then joined with expoxy and (temporary) mechanical means like deck or drywall screws.

    The Core Cell is very easy to work with and shapes like a fine hardwood with considerably less effort. While it is possible to cut it with a razor knife and then snap, it can also be accurately trimmed to size with a table, band or radial arm saw.

    To join a vertical piece of plywood to a horizontal deck piece you can do either of these or both:

    1. Join with epoxy and (temporary) mechanical means to clamp in place while epoxy cures, or
    2. Epoxy into place and use plastic-coated foam blocks to hold in position and then tab on one or more sides with expoxy and fiberglass tape.

    If I were joining bulkheads to a deck, I'd use both methods, then remove screws, fill the holes and then glass the skin over. This would be extremely durable and strong. And, compared to the typical balsa-cored deck, you would never have an issue with water problems in the future. The foam does not absorb water.

    Here is a couple of examples of a sailboat cabin extension I'm currently making using Core Cell M80 and Cross Linked PVC for the roof:

    Design & Framing

    Preparing For The Roof
     
  4. fallguy
    Joined: Dec 2016
    Posts: 4,006
    Likes: 641, Points: 123, Legacy Rep: 10
    Location: usa

    fallguy Senior Member

    Also, if you wanted to make a cabin base with the M80 19mm, and the base were 8' x 12' would you scarf them at 8:1? Thanks. I am interested in some of this, but a little early.
     
  5. captainmurph
    Joined: Dec 2015
    Posts: 9
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    Location: Shelbyville, MI

    captainmurph Junior Member

    I assume you're talking about making a scarf cut across the width of a 4/8 sheet to make more surface area for an epoxy bond? If so, yes, you could make a scraft joint to do this, but it really doesn't matter. Since the strength of the skin is the glass mat and/or cloth on both sides, a simple butt joint would work just fine. If I were joining two sheets to make one 12-16 feet long, I would just butt with an epoxy "buttering" of the thickness and then use 4" tape on or or more sides to give it more stability until the skin was installed.

    In the project I am currently making, I didn't need to make any joints in the foam sheeting, but found that taped butt joings for 90 degree joints worked just fine.

    Greg Murphy
     

  6. dbiscayne
    Joined: Jan 2017
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    Location: florida

    dbiscayne New Member

    foam core

    do you still have some available?
    sent you a pm.

    thanks,
     
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