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hot glue

Discussion in 'Electronic Repair' started by Orange, Aug 22, 2004.

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  1. Orange

    Orange Guest

    I need some recommendation about using hot glue for securing
    electronic components on PCB (motherboard).
    What type of hot glue and "gun" for it is best?
     
  2. Mr TUBEAMPS

    Mr TUBEAMPS Guest

    iv'e used hot glue on transformers after removing
    the internal fuse that blows to force peaple
    to buy new transformers.
    and i use candle wax on some pcb's.
     
  3. Orange

    Orange Guest

    What about using it to glue battery holder, away from solder
    connections (not very far, though, its a coin type, lithium battery)?
     
  4. Alex Bird

    Alex Bird Guest

    I reckon that's fine, this guy is talking about SMDs etc with much
    finer tolerances. Don't make a mistake though, it's messy melting it
    off again.

    I regularly use it to add strength to damaged power connectors etc,
    where the only support was the solder on the pcb, stupid designs...

    Alex
     
  5. Jason D.

    Jason D. Guest

    NOT recommanded!

    We get this problem with hot glue breaking solder connections a year
    to couple years after the manufacture.

    If this is one off, position each flat pack SMD that has more than 2
    leads component and tack one corner pin and another to secure it and
    finish rest of soldering on that component.

    In production used very tiny dots of special glue and component is
    placed on still liquid dots then cured hard to secure small and medium
    sized components for wave or IR soldering then rest of big parts are
    individually installed and soldered seperately like BGA, 100 pin SMD
    etc.

    That special glue hardens like epoxy but moderate force breaks
    component loose from this glue's grip during unsoldering job.

    Cheers,

    Wizard
     
  6. gothika

    gothika Guest

    I do that as well. After soldering leads or connectors, seal them with
    a medium temp hot glue to reinforce the fix and avoid stress breaks.
    I use hot glue in jacks and coax connectors as well to avoid stress
    and pull breaks and avoid shorts or grounding.
    (After soldering the leads in my mini stereo jacks I give it a squirt
    of hot glue then screw on the plastic boot. They last much longer that
    way.)
     
  7. Guest

    I think hot glue is great. I have used it on pcbs on my motorcycle. It keeps "large parts" from
    vibrating and breaking solder joints. I don't think the gun or glue is important. You can get small
    or large guns I have both. The glue type depends on the heat in the area, low temp will reflow in a
    high heat area.
    As for removel, alcohol (isopropyl) "breaks down" the glue, and you can pick it off the parts.
     
  8. Actually I find a hair dryer will warm it enough to soften and allow
    it to be peeled off. Crappy stuff for electronics though since it
    loses strength as the gear warms up. Devcon plastic welder is my
    favorite for mechanical repairs to broken plastics. Much stroger than
    epoxy. Pretty strong on metals, too.

    gg
     
  9. Norm Dresner

    Norm Dresner Guest

    I find myself needing some specialized extender boards to repair some HP &
    Tektronix instruments.

    Is there a known source for these other than the manufacturer?

    If I wanted to make my own extender boards, what's the best source for a
    large variety of edge connectors?

    TIA
    Norm
     
  10. TekMan

    TekMan Guest

    ebay, garage sales, flewmarkets of the radio amateur league...
    Depending on age:
    Major sellers like Digikey, RS comp..
    Scrap yards...
    Junk boxes of electronics companies..
    hth,
    Andreas
     
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