View Poll Results: What do you use to fill gaps?

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  • Epoxy

    6 37.50%
  • ABS sheets, balsa wood, ...

    0 0%
  • Liquid plastic or plastic solvents

    0 0%
  • Fiberglass and bondo

    10 62.50%
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Thread: Epoxy used to fill gaps - good or bad?

  1. #1
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    Epoxy used to fill gaps - good or bad?

    I've been reading now and there seems to be some mixed reviews.

    I epoxied a 7" screen bezel to a double-din bezel and there was a < 0.25" gap on either side. To fill the gap I taped off the front and poored epoxy glue into the gap. This created a very good mold of the front that will require little sanding.

    I read about epoxy not being very strong to use as structural support. Also read about epoxy cracking when used in large quantities to fill. Should I be worried?

  2. #2
    Low Bitrate Ub312g0d's Avatar
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    I would not ever use epoxy just by itself. It seems to work alright sometimes but I've never had really good experience with it durability wise. Also if you live in a colder environment the epoxy WILL not hold. Like a trick to seperate objects joined with epoxy is to put them in the freezer.

  3. #3
    Variable Bitrate Dracos's Avatar
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    use epoxy to tack and offersupport - but use fiberglass to fill. works a charm (check out my installs for proof)

  4. #4
    Maximum Bitrate Altimat's Avatar
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    Epoxy sticks best to a properly prepared surface. Use glass or carbon cloth with it for strength. Mix it with microballoons to make a filler.
    Fabricator

  5. #5
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    I got this epoxy putty stuff, picture a straw (only fatter) with the straw being the hardener and the stuff inside the straw the adhesive (it may be the other way around, I dunno...)

    You break off what you need, mash it around and form it like clay or play-dough, and it hardens pretty well. I used it for the frame around my screen and don't have any problems yet. (http://community.webshots.com/album/400638837lHBGTW) for assembly pics

  6. #6
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    fiberglass!

  7. #7
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    Quote Originally Posted by Ub312g0d
    I would not ever use epoxy just by itself. It seems to work alright sometimes but I've never had really good experience with it durability wise. Also if you live in a colder environment the epoxy WILL not hold. Like a trick to seperate objects joined with epoxy is to put them in the freezer.
    I'm in Ottawa and we get -40C in the winter.

    I'm going to put my bezel in the freezer to see what happens, if you're right I'll cut out the epoxy and replace with fiberglass.

  8. #8
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    Bugbyte's Avatar
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    Fiberglass cloth soaked in epoxy works extremely well.
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  9. #9
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    Thanks everyone. The epoxy held even when frozen, so this is the path I have taken. Since the gaps are so small I used epoxy to fill them and am about 50% done.

    Going to use a putty knife and the longer setting epoxy to fill aeas on the top rather than bondo. The epoxy seems easy enough to sand, and doesn't seem to leave pinholes like fiberglass, so bondo may be unneccessary if I can fill and sand well with the epoxy.

    Hopefully have pics up in my worklog this weekend. Struggling with fitting a 7" screen and slot-load DVD drive within an over-sized double-din.

  10. #10
    Constant Bitrate BassBinDevil's Avatar
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    Marine bondo is made from something like epoxy mixed with fiberglass filler. It's much more waterproof than regular bondo, but harder to sand.

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