aluminium wood lamination question

Discussion in 'General Slingshot Discussions' started by Snader76, Aug 23, 2013.

  1. Snader76

    Snader76 Dysfunctional Member

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    Hi all.
    Please help!
    How to make strong aluminium core wood laminate?
    Glue? Epoxy? Process?
    Thank you.
     
  2. dolomite

    dolomite Banned

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    Snader, i'm hoping someone has answers for you, I've been thinking ally core as well.
     

  3. Snader76

    Snader76 Dysfunctional Member

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    My first attempt was not real good i need help.
    I used loctite e 120hp epoxy and it didnt bond to aluminum.
     
  4. Will

    Will Thread Hijacker

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    If you repeatedly dimple the surface of the aluminum all over (and I mean all over) with a nail or a centerpunch, it should bond fine. I have done this with a different woodworking project before and the epoxy adhered fine.
    Otherwise, you might ask Flicks about his technique. He has done some great aluminum-core work
     
  5. slingpit

    slingpit Slingshot addicted

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    I'm using hot glue. Lay the Alu on a heated plate,so you can move the wood parts in the right position.
    It works very well with Alu and wood. I don't know anything about a combination with plastic.
     
  6. Snader76

    Snader76 Dysfunctional Member

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    Thanks Will and Slindpit. Ill try both methods, need to make test pieces.
    I did scuffed up he aluminum plate with 100 grit sandpaper and one side took better then other side, don't know y that happened.
     
  7. Will

    Will Thread Hijacker

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    Make that baby look like you nailed it with a few loads of birdshot, and then rough it up with the paper. That will give the epoxy something to bite onto.
    Or of course, try Slingpits technique, which is very clever
     
  8. Moin moin,

    I suppose an adhesive based on polyurethane ...
    PK 75
    Therefore stairs are glued ....

    Good hard pressing, he goes on frothy!
    Ver so I stick to one another and leather pouches. Although we have here really strong movement, it HäT .....

    http://www.bostik.de/uploads/tx_approductdb/PK_75_Konstruktionsklebstoff.pdf

    Ich nehme einen Kleber auf PUR-Basis...
    PK 75
    Damit werden auch Treppen verklebt....

    Gut Festpressen, er geht schaumig auf!
    Damit ver klebe ich auch Leder Pouches aufeinander. Obwohl man hier wirklich starke bewegung hat, hät es .....
     
  9. slingpit

    slingpit Slingshot addicted

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    I'm with Will. Don't polish the areas which will be glued. Make them rough like Will said.
     
  10. Brazilviking

    Brazilviking Thread Hijacker

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    I'm using epoxy on a project (oops, it was a secret!)
    And it is very well glued! Make the surfaces rough with 60 grit metal sandpaper, both wood and alu. Get a knife and scratch deep the surfaces in a multiple square design (both of them too). Spread the glue already mixed uniformly (this word exists?).
    Position components and clamp ghem tight on a g clamp or vise with planks, so the pressure can be spread uniformly. Wait 30 hours.
     
  11. flicks

    flicks ...lost in the woods....

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    Thanks Will, but I think you are referring to Antraxx' work;)
    Anyway, most of the hints have already been mentionend. Rough up the aluminum plate with 120 grid and then remove the sanding dust. It is as well important to degrease the aluminum with acetone or a break cleaner. You can shorten the curing time and the increase the strength by tempering, which means to increase the temperature of the glued part to 80 C for approx 6 hrs in the oven (could lead to discussions with wife or GF) or in a self build temper box.
     
  12. Will

    Will Thread Hijacker

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    ^:eek::eek:
    I am very sorry Flicks!! Can I blame that as an early-morning mistake?:mad:
     
  13. flicks

    flicks ...lost in the woods....

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    Ha ha, don't worry Will :p
    ....confused in the morning - this should help.... :D
     

    Attached Files:

  14. Will

    Will Thread Hijacker

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    ^
    Thanks very much, and that would indeed help!:D
     
  15. Snader76

    Snader76 Dysfunctional Member

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    Thanks everybody.
    Im making second attempt now and i will try to prepare surfaces better this time.
    I think it was my fault first time around and that would explain bad adhesion on one of the boards.
    Cross my fingers and wait.
    And hot glue method sound interesting Slingpit i will try it.
    Thank you all.
     
    Last edited: Aug 23, 2013
  16. Brazilviking

    Brazilviking Thread Hijacker

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    Damn! I almost liocked the Iphone!!!:mad:
     
  17. Will

    Will Thread Hijacker

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    I had a go at drinking it myself it looked so good! Plus, I needed it after my screw-up...:eek:
     
  18. Flippinout

    Flippinout New Member

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    I have done a few tutorials on this subject that may be of help

    [ame]http://youtu.be/UV2ki5rdgrU[/ame]

    [ame]http://youtu.be/aGCGcugUBiQ[/ame]
     
  19. dolomite

    dolomite Banned

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    Nathan, extreme thanks! Those tutorials are exactly what we needed, looks like I need to source some core material now.:D
     
  20. Will

    Will Thread Hijacker

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    Great vids Nathan, thanks very much for sharing!

    Hey Dolomite, Amazon carries aluminum plate for a decent price. Even found some 1/4" stuff. Might check that out