advice on mending broken plastic seat on kayak

Discussion in 'Fiberglass and Composite Boat Building' started by kanaya, Jun 5, 2009.

  1. kanaya
    Joined: Jun 2009
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: NORTHERN IRELAND

    kanaya New Member

    hi everyone im new here and defo need some good advice recently i bought an old sit in kayak pretty old the seat is plastic and needs bonded to what i believe is fibreglass as the seat is very much broken off can anyone suggest a really strong adhesive that may do the job ? all suggestions greatly welcomed (its my first kayak ) thankyou in advance :) :)
     
  2. Ike
    Joined: Apr 2006
    Posts: 2,531
    Likes: 367, Points: 83, Legacy Rep: 1669
    Location: Washington

    Ike Senior Member

    Use the seat as a mold and make a new one of fiberglass using epoxy resin. The epoxy won't stick to the plastic so when it has set up you can just peel it off.
     
  3. PAR
    Joined: Nov 2003
    Posts: 19,133
    Likes: 487, Points: 93, Legacy Rep: 3967
    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Oxidize the surface with a torch and use GFlex epoxy, from West System on the parts. This will bond fairly well, but unfortunately nothing really bonds well to those types of plastics. Log onto Westsystem.com and look in their user's guide for difficult bonding applications. With any luck they'll have updated the site to include the newer products and techniques.
     
  4. oscarvan
    Joined: May 2009
    Posts: 18
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Bethlehem, PA

    oscarvan Junior Member

    What type of plastic is it? Fiberglass? Polyethylene? A picture would help.
     

  5. alan white
    Joined: Mar 2007
    Posts: 3,731
    Likes: 122, Points: 0, Legacy Rep: 1404
    Location: maine

    alan white Senior Member

    Buy a new seat. It's the best long term solution. To fix a polyethelene seat will cost more (if your time is worth anything at all) and it won't have a lifespan as long as a new one.
    That said, I've repaired polyethelene by welding it using a hot knife (my tile saw reservoir has lasted a year through a few tile jobs with no leaks yet).
    Adding somw fresh plastic makes the joint thicker and stronger. Some could maybe be cut from the edge of the seat. You could heat it in a metal can on the stove (carefully, not too hot) and pour it into the fresh hot weld, or have a helper follow your hot knife as it melts a groove into the crack, pouring it in before the groove cools.
     
Loading...
Similar Threads
  1. massandspace
    Replies:
    2
    Views:
    305
  2. Mark C. Schreiter
    Replies:
    4
    Views:
    335
  3. vroomZOOM
    Replies:
    8
    Views:
    554
  4. Cashinhand2
    Replies:
    13
    Views:
    551
  5. Ronjon
    Replies:
    55
    Views:
    3,231
  6. tuna_fan
    Replies:
    5
    Views:
    718
  7. Outwith Jack
    Replies:
    10
    Views:
    924
  8. fallguy
    Replies:
    23
    Views:
    1,279
  9. GreenFreak
    Replies:
    12
    Views:
    1,439
  10. Ryan Look
    Replies:
    12
    Views:
    1,312
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.