Widened out panga

Discussion in 'Boat Design' started by Jim Allen, Nov 23, 2017.

  1. wavepropulsion
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    wavepropulsion Junior Member

    Following seas and fair winds for you Ilan. We're all touching your collar.
     
  2. Ilan Voyager
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    Ilan Voyager Senior Member

    Many thanks...After a very hard time, it seems that nobody wants of me in hell or paradise. As they did not agreed who was receiving my soul, they reported the appointment sine die.
    Are you always interested by a description of the placo plastic method? ie using polyester plates and a jig?
     
    Last edited: Feb 15, 2018
    wavepropulsion likes this.
  3. Ilan Voyager
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    Location: Cancun Mexico

    Ilan Voyager Senior Member

    I agree about incidental costs and time. But that depends on the availability of the materials and the local technical capacities.
    I like aluminum but it is a very technical material. Welds must be flawless. One bad weld and you're in deep trouble. You need special precautions about electrolytic corrosion.
    There are only a few producers of marine alu plates (series 5000 alloys) in the world, so the shipping to a third world country is insanely expensive because of the size and fragility of the plates, which need crates.
    This material needs a very precise tooling including welders and most important qualified "weldors" to be used successfully. MIG alu qualified "weldors" in Mexico and most countries of the world are very rare animals.
    For example in Mexico there is only one shipyard theoretically able to make alu boats...Rial at CancĂșn. I have calculated that because of the prices of argon gas (three times the USA price), and alu plates after importation costs (at least two to three times the canadian or USA prices), plus the cost and problem of qualified weldors, in my opinion it would be cheaper and simpler for Rial to import the boats from the mother shipyard in Spain already UE certified or maybe to make them in the States, because a tax trick can be done with a almost fake society created in the Delaware State.

    Simple polyester boats can be made by amateurs or low tech shipyards and the basic materials are readily available in a lot of countries. The lone problem is the mold for a one off boat. Cflex, I know after an itchy and hard experience, is useless. Foam is a bit better, but is impaired by the initial cost and the expensive shipping, added to a very long finishing work.
    With simple polyester shipping is easy and straightforward; steel drums of resin, rolls of mat, cloth, UDs and coremat and a few 5 gallons plastic buckets as strong sealed boxes for the other items.
    In Mexico for example, as there is a strong trailer making industry using lots of polyester, you will find at very good prices, marine isophthalic polyester resins, glass fibers, coremat, honeycomb, polyurethane, epoxy glues, structural pop rivets, fillers, paints etc...All easily shipped at not extra cost. The same relatively cost of shipping applies also in the States.
    The "placo plastic" is a method to solve cheaply the mold inconvenient of polyester boats, and to save the hard and lengthy work of finishing. It's not a panacea, it has also inconvenients and limitations. When you'll read the method you'll understand, it's pretty subtle.
     
    Last edited: Feb 16, 2018
  4. wavepropulsion
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    wavepropulsion Junior Member

    Are you always interested by a description of the placo plastic method? ie using polyester plates and a jig?[/QUOTE]

    Yes please, if you can send me some link or instructibles, or may be open a new thread about. Because I live in a third world country too, and materials here costs as double or more than in Europe or the US. Another issue I have is about plywood boats life expectancy, and cautions related to this.
    Happy the gods solved your healt issue, you must b some kind of a bad herb.
     
  5. Ilan Voyager
    Joined: May 2004
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    Location: Cancun Mexico

    Ilan Voyager Senior Member

    Yes please, if you can send me some link or instructibles, or may be open a new thread about. Because I live in a third world country too, and materials here costs as double or more than in Europe or the US. Another issue I have is about plywood boats life expectancy, and cautions related to this.
    Happy the gods solved your healt issue, you must b some kind of a bad herb.

    The health issue is not solved and will never be, but it seems that won't kill me in a short term. Yes I'm a bad weed...A Jewish friend of mine says; I'm not well but it could be worse, so I'm optimistic.
    I'll open a new thread. I have to re-read my notes et make some drawings. The method is pretty simple and needs only common sense. I need a few days for preparing the thread.
     

  6. wavepropulsion
    Joined: May 2010
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    wavepropulsion Junior Member

    Thank you Ilan. Me and probably much other people read your posts or knows about you in this forum. I still reading boatdesign.net probably from 10 years now and I learnt here most of what I now thanks to you and other members.
     
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