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    Regardless, it's rude to wish me "good luck," or...

    Regardless, it's rude to wish me "good luck," or "kindly warn of the frustration" I might face when you have the ability to ease that burden by giving advice. If you do not wish to share advice...
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    How very kind of you to wish me luck. Perhaps I...

    How very kind of you to wish me luck. Perhaps I shall document the process here once I get it all worked out?
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    Ok, thanks. Now I just need to figure out...

    Ok, thanks.

    Now I just need to figure out where to buy foam. From what I've read it's 30ppi or so. There's polyester and polyether reticulated foam, not sure which is best.

    Unfortunately I...
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    Thanks. I assume this was an aftermarket thing,...

    Thanks. I assume this was an aftermarket thing, not jbl factory equipment?
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    Kay, Eggcrate foam is actually made with a...

    Kay,

    Eggcrate foam is actually made with a bandsaw. Its sawed while being squished by two convoluted rollers, see video below.

    Foam poured in a mold has a non-porous skin on the outside, so...
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    Quadrex foam grills: how were they made?

    Anyone know how the original quadrex grills were made? I was thinking they were sculped with a hot wire, but apparently that's a no no with polyurethane foam. I guess that leaves either some sort of...
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