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Thread: Thoughts on LCD packaging...

  1. #1
    FLAC
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    Thoughts on LCD packaging...

    I'm trying to work out how to build a custom in-dash mounting for a 10.4" lcd screen. One of the things that occurred to me just now as I wondered how to build a neat case was whether you could use a packaging foam I've seen that was used on a package I received. It looks like the foam was initially liquid and they pushed the lcd monitor into it and then the foam solidified in the exact shape of the monitor.

    Does anyone know where you could get that? It might be a very neat way to mount stuff within a fairly standard metal enclosure. Put the plastic bag with this foam into the back of the case. Position everything where you want it. Place front. Wait until it's set and you're done.

  2. #2
    Low Bitrate FishCook's Avatar
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    There are a couple of different ways you can go. There's a a spray on insulation foam that a number of people around here have used to start building custom pieces, as a base for the fiberglass or bondo. There's also 2 part expanding foam (think resin&hardener type of stuff) that I've seen some people use for real custom work. I've seen the spray stuff in the hardware store but I've only seen the 2 part stuff online. Something like this :http://www.cardomain.com/item/FSHFIFOAM2Q . hope this helps

  3. #3
    FLAC
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    Yeah, I've used the expanding foam from home depot. I don't like it - it's expands a lot more than you expected (and continues expanding in the future on hot days) and it's glue so it's unpleasant if you get it on your hands.

    The stuff I saw as packaging was in sealed plastic bags which would nicely keep it off the components (I don't want to glue my LCD panel in, just have a very tight, padded fit).

    Trouble is, I've no idea what that packaging stuff was or where to get it.

  4. #4
    Newbie fearthepenguin's Avatar
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    packaging foam

    I think what you are looking for is something like This
    A lot of people use it to ship computer gear and what not. Good idea BTW, I would only suggest testing on an old LCD or thin piece of glass as this stuff does expand with a bit of force and could crack the lcd if you are holding it on there too hard.
    Jason
    It gimme the jibblies

  5. #5
    FLAC
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    That's the stuff. Cheap by the bag, very expensive by the box :-(. A bit bigger than I was hoping too. Maybe a ziplock bag plus the home depot stuff might be the way to go but I suspect the home depot stuff needs air to cure

  6. #6
    Newbie fearthepenguin's Avatar
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    Quote Originally Posted by Arathranar
    ...Maybe a ziplock bag plus the home depot stuff might be the way to go but I suspect the home depot stuff needs air to cure
    The canned expanding foam does indeed need air to cure, otherwise you would end up buying a very bouyant tin can. This stuff is pretty much the two part foam in a bag.
    Jason
    It gimme the jibblies

  7. #7
    Low Bitrate FishCook's Avatar
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    Quote Originally Posted by fearthepenguin
    I think what you are looking for is something like This
    Too Bad that stuff's not very cost effective. Another way you could go is to wrap the object your building around in plastic making sure you get a real snug fit. Then, just press the object into the foam as it's curing and wait for it to set. Just be careful that the foam doesn't eat away at the plastic and damage your precious touchscreen.

  8. #8
    FLAC
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    The more I think about it, the more I lean towards a simple (bought) small metal enclosure (if I can find one approximately the right size) and a few pieces of stiff rubber glued around the lcd panel and placed behind it to hold it firmly in place against the front of the metal case.

    Making a very neat lcd-sized hole in the front of the metal case will be the hardest part and I've got the problem whatever approach I go far.

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