steel and glue boatbuilding

Discussion in 'Metal Boat Building' started by stonedpirate, Apr 11, 2015.

  1. stonedpirate
    Joined: Nov 2009
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    stonedpirate Senior Member

    Hi all

    I just watched this video and it claims that their glue is stonger than rivets and welding.

    https://www.youtube.com/watch?v=kmwY3EATCPc

    Has anyone considered building a boat out of glued steel?

    Any reason why this wouldnt be possible?

    Thanks
     
  2. CDK
    Joined: Aug 2007
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    CDK retired engineer

    Youtube's reputation for reliable information doesn't score high.

    I've never heard of anyone who glued a steel hull, but there may have been a few. But they probably all drowned....
     
  3. stonedpirate
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    stonedpirate Senior Member

    lol

    fair enough

    could be the way of the future though, stich and glue steel hulls :p
     
  4. TANSL
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    TANSL Senior Member

    The tensile test we can see in the video is totally wrong: you can not put rivets such a large diameter in such a thin sheet.
    Although the glued joint is stronger than the riveted joint, the test, in my opinion, does not allow to say to what extent a system is better than the other, since the union with rivets is not correct.
     
  5. stonedpirate
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    stonedpirate Senior Member

    I see

    For small boats, it does seem to be strong enough though even if not stronger than welds and rivets.

    Would be interesting to see a boat made like this
     
  6. Mr Efficiency
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    Mr Efficiency Senior Member

    I don't think the initial bond would be the issue, more what happened over time, when oxidation intruded between metal and glue.
     
  7. stonedpirate
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    stonedpirate Senior Member

    yes, good point
     
  8. TANSL
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    TANSL Senior Member

    When two metals are welded it is required that the provided metal (welding) have better mechanical properties than the base metal. I do not know if this can be achieved with the glue used. If not, the union will always be weaker than the metals being joined, which is incorrect. Should be found in any case, the mechanical properties of the joint so that it can be accepted or not. It is very unwise to build a boat with a material whose resistance is unknown.
     
  9. waikikin
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    waikikin Senior Member

    I have a hot glue gun ideal for putting together steel boat hulls.......

    250 amp mig with separate wirefeed & 8m interconnect......

    Jeff.
     
  10. TANSL
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    TANSL Senior Member

    I agree, waikikin, no doubt this is the best glue to be found and if it has been very successful, why change it ?.
     

  11. waikikin
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    waikikin Senior Member

    That glue test video is pure bs, putting rivets & a couple of spot welds up against it dont rate against a butt wel or lapped & filleted would be a fair comparison.

    MIG wire is only about 2 bucks a kilo & sets quick too.
    Jeff.
     
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