Anyone use JB Kwik

Discussion in 'Replica Props' started by Birdie, Apr 6, 2006.

  1. Birdie

    Birdie Master Member RPF PREMIUM MEMBER

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    Anyone use this stuff?

    I've been trying to use JB Kwik on plastics, and it joes doesn't seem to adhere, even after roughening the sufraces. It cures, then just peels off. Anyone else have this problem?
     
  2. gonk27

    gonk27 Sr Member

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    Hmmm.. I've never had that trouble with JB Kwik although I've never used it on plastics, just metals and fibreglass..

    If it's 'peeling' rather than flaking or chipping off (and you've mixed it thouroughly) then maybe you've been unlucky with a duff batch?

    Even though it dries quite quickly I assume you've been leaving it alone for a couple of hours anyway to completely harden?? Perhaps if you've been working in cool temperatures that's also slowed hardening?


    Jeremy
     
  3. Gatekeeper

    Gatekeeper Well-Known Member RPF PREMIUM MEMBER

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    I've used JB Kwik in several projects, and although I don't find it as reliable as regular JB Weld, I've never experienced any peeling off.

    What kind of plastic are you using it on?
     
  4. PlanoJedi

    PlanoJedi Well-Known Member

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    I've had trouble in the past with epoxies of different types not sticking to a lot of soft plastics, Particularly PE (PolyEthylene). The stuff 5-gallon buckets are made of. It makes me think it's the Plastic. My .02.

    PJ
     
  5. Birdie

    Birdie Master Member RPF PREMIUM MEMBER

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    The plastic is the kind on bakelite that cheap airsoft guns are made of.
     
  6. Gatekeeper

    Gatekeeper Well-Known Member RPF PREMIUM MEMBER

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    Weird... real bakelite - phenolic resin - shouldn't be a match for the JB. If the problem isn't a bad JB Kwik batch, I'd suspect there might be issues with the plastic itself - does it feel kinda oily to the touch? Maybe badly cured?
     
  7. howlingwind13

    howlingwind13 Sr Member RPF PREMIUM MEMBER

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    I use it all the time only had one problem with it I used it on the resin crank knob for my proton pack...I didn't scub and clean the bottom of the part and it fell off.
    mike
     
  8. Treadwell

    Treadwell Master Member RPF PREMIUM MEMBER

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    did you scuff up the surface first?
     
  9. Hecubus114

    Hecubus114 Sr Member RPF PREMIUM MEMBER

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    I've had plastic epoxy peel off of the plastic DVD cases are made of.
     
  10. Treadwell

    Treadwell Master Member RPF PREMIUM MEMBER

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    Flat, injection-molded surfaces are not what the JB products were meant for, anyway. You need one of those glues that create a chemical bond (assuming the part being attached is also plastic).

    JB stuff is better for filling and attaching rough or jagged surfaces.
     
  11. USSCassiopeia

    USSCassiopeia Active Member

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    The Kwik just seems to have a different feel to it...
     

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