Infuse two sides foam at once

Discussion in 'Materials' started by MassimilianoPorta, Nov 14, 2019.

  1. MassimilianoPorta
    Joined: Apr 2019
    Posts: 42
    Likes: 3, Points: 8
    Location: Italy

    MassimilianoPorta Junior Member

    Lot to think about... but the Patriot system is out of the budget at the moment
     
  2. rxcomposite
    Joined: Jan 2005
    Posts: 1,987
    Likes: 176, Points: 63, Legacy Rep: 1110
    Location: Philippines

    rxcomposite Senior Member

    There is a little dimple but once the peel ply is removed there is none.
     
  3. Eric ruttan
    Joined: Jul 2018
    Posts: 58
    Likes: 4, Points: 8
    Location: usa

    Eric ruttan Junior Member

    the harryproas 'intelegent infusion' does this. One half hull mould, two sides at once.

    It's not a high gloss finish. You pull the peel ply and paint, or play with it until you're happy.
     
  4. ondarvr
    Joined: Dec 2005
    Posts: 2,083
    Likes: 185, Points: 63, Legacy Rep: 506
    Location: Monroe WA

    ondarvr Senior Member


    I don’t think you ever mentioned how large these panels need to be.

    A method that works well on a small panel may not as you scale it up.
     
  5. gonzo
    Joined: Aug 2002
    Posts: 13,726
    Likes: 419, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    It never does scale up. The velocity of the resin will not change, so the time will be longer. Also, there is a maximum area that the resin will wet from one inlet. The amount and distribution of inlets and outlets needs to be well designed or there will be dry spots. Infusion only makes sense for molds with very complicated shapes.
     
    KD8NPB likes this.
  6. Eric ruttan
    Joined: Jul 2018
    Posts: 58
    Likes: 4, Points: 8
    Location: usa

    Eric ruttan Junior Member

    Horsecrap.
    Want to talk to a guy who infused a pair of 60' hulls north of the artic circle?
    Pics on harryproa.com
     
  7. KD8NPB
    Joined: Mar 2018
    Posts: 70
    Likes: 11, Points: 8
    Location: South Carolina

    KD8NPB Junior Member

    “The amount and distribution of inlets and outlets needs to be well designed or there will be dry spots. ”

    This is completely true, but not terribly hard.
     
  8. Eric ruttan
    Joined: Jul 2018
    Posts: 58
    Likes: 4, Points: 8
    Location: usa

    Eric ruttan Junior Member

    Sorry, let me qualify the parts I belive to be incorrect.
    This
    See pic of 60' hull

    And this
    the pics on harryproa.com show a very simple hull
     
  9. KD8NPB
    Joined: Mar 2018
    Posts: 70
    Likes: 11, Points: 8
    Location: South Carolina

    KD8NPB Junior Member

    what he probably means is that it would be more cost effective to open mold.
     
  10. Eric ruttan
    Joined: Jul 2018
    Posts: 58
    Likes: 4, Points: 8
    Location: usa

    Eric ruttan Junior Member

    I cannot know what he ment.
    Perhaps it is resonable.
    Robs molds are open, and infuse both sides at the same time.
    The OP's question was simply can it be done.
    It can, and is.
    Even by NOOBs like me.
     
  11. gonzo
    Joined: Aug 2002
    Posts: 13,726
    Likes: 419, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    I would, and I bet he was not clueless.
     
  12. gonzo
    Joined: Aug 2002
    Posts: 13,726
    Likes: 419, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    It doesn't scale up, because a small part can be infused with two ports, where a large hull needs several. Otherwise, instead of personal attacks, show me wrong by describing the technology.

    People do many things that don't make sense.
     
  13. Eric ruttan
    Joined: Jul 2018
    Posts: 58
    Likes: 4, Points: 8
    Location: usa

    Eric ruttan Junior Member

    I am unable to parse this sentance.
    Is it possible you may clarify it?

    But, to the OP's question, yes you can infuse both sides at once, and said infusions can be as big as you desire.
    His contact info is on harryproa.com
     
  14. rob denney
    Joined: Feb 2005
    Posts: 722
    Likes: 86, Points: 28, Legacy Rep: 436
    Location: Australia

    rob denney Senior Member

    The builder is Steinar Alvestad. He was indeed clueless when he and his brother bought the plans for a 20m/66' harryproa as neither of them had worked with epoxy, moulds, foam or infusion before starting. And, they live on an island above the Arctic Circle. With a lot of designer advice and extensive testing they infused the half hulls (4 of them, they were building a boat each) using a single port. It is not difficult, if you set everything up properly. These hulls are very curvy, so a bit of work was required to get the foam to fit.

    This is one of the boats that lead to Intelligent Infusion, Intelligent Infusion – HARRYPROA http://harryproa.com/?p=1845 which is by far the simplest, cleanest, cheapest way to build a cored hull.

    Steinar has just infused the first of his 9m long beam halves, which has 40mm thick carbon in the corners. Also with a single port.

    He is also the Harryproa stylist and plans drawer, to which he applies the same methodical, user friendly approach as he does to boat building.

    The build photos of his boat, which is on target for 3 tonnes weight in sailing trim, are at Custom 20m/65′ – NORWAY – HARRYPROA http://harryproa.com/?p=726

    A paint ready showroom surface on both sides is a big ask, but there are a couple of tricks to get close, without needing a mould on both sides.

    rob
    www.harryproa.com
     
    MassimilianoPorta likes this.

  15. MassimilianoPorta
    Joined: Apr 2019
    Posts: 42
    Likes: 3, Points: 8
    Location: Italy

    MassimilianoPorta Junior Member

    The panel will be 1.5 x 2 meters (59 x 78 inches)
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.