Loading ...
Sorry, an error occurred while loading the content.

27531Re: [bolger] Re: PL Experience

Expand Messages
  • andy wilson
    May 4, 2003
      Well said! This should be pinned to the boat shed wall and frequently re read! If you can swim and the water is warm [and shallow!] then a cardboard boat glued with fish paste makes sense.........however,far out at sea on a falling glass you may wish you had chosen something else............Andy

      proaconstrictor <proaconstrictor@...> wrote:"What more does glue have to do but out last the materials it's
      holding together."

      I don't find this report particularly surprising, any construction
      adhesive would have done the same, unless water was a big issue.

      Basicaly the expectation of a good glue is that the wood breaks
      before the glue. I think fish paste would do this. Big deal.

      In your situation, the structural issue I imagine would be whether
      the seats play an essential part in the overall structure of the
      boat. In some boats the furniture is an essential element in the
      strength of the boat. On the other hand if it is just holding itself
      up like a gloryfied love seat then construction grade materials with
      maintenance characteristics you feel comfortible with should be fine.

      Where the joint is structural, destruction tests aren't always
      adequate. The forces applied to the boat are long term. A bulkhead's
      ability to resist over years is completely different than it's
      ability to resist a blow from a hammer.

      Also, when one takes something apart of course one tries to pry
      pieces apart along their lines of greatest weakness, for instance
      spliting the plywood around the glue. But when aligning the materials
      to bear loads its the opposite, you try to place them so they will
      take the biggest loads possible. Wood splits esily, and the loads
      you applied split with the grain. Good structure aligns loads with
      wood's strengths, endgrain compresion, and in line with the grain.
      One tries to distribute loads as broadly as possible, and where
      possible as shear loads to the glue joints. If these loads are
      significant and persistant, they will severely test the glue in the
      joints.

      Take a hurricane clip, or any similar little piece of Strongtie
      metal. You can get your claw in under that and pull it off easily.
      You might say, "it pulled ou real easy, why not use non-code nails,
      or plastic ones, they could hardly pull out any easier". But the
      clips are loaded tranverse to the nail, and how easily the nail pulls
      out is irrelevant, how easily the heads shear off matters a lot.

      None of this has anything to do with your specific application. It
      could be quite strong enough. I just don't draw the same conclusion
      you do about what tearing the boat apart means relative to the
      performance of materials.


      Yahoo! Groups Sponsor
      Bolger rules!!!
      - no cursing, flaming, trolling, spamming, or flogging dead horses
      - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
      - add your comments at the TOP and SIGN your posts and <snip> away
      - To order plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
      - Unsubscribe: bolger-unsubscribe@yahoogroups.com
      - Open discussion: bolger_coffee_lounge-subscribe@yahoogroups.com

      Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.



      ---------------------------------
      Yahoo! Mobile
      - Check & compose your email via SMS on your Telstra or Vodafone mobile.

      [Non-text portions of this message have been removed]
    • Show all 16 messages in this topic