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Thread: fiber glass box thickness

  1. #1
    Well, He asked for it. WebDog's Avatar
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    fiber glass box thickness

    I have been building a new sub box for my new 12" infinity sub. i have about 4-6 layers of fiberglass matt + a layer of fleice .

    I cant flex it anywhere do you think its think enugh?
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  2. #2
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    how thick is the fiberglass mat that you are using? how thick would you say you are right now? 1/2"? 3/4"? 1"?

    how much resin did you pour on the fleice and let kick before putting the mat on?

    as long as you don't have any air pockets you should be fine.

    if in doubt, put another layer on.

    also, do you think you could stand on the box without it flexing? if so then I would say you are good to go!
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  3. #3
    Well, He asked for it. WebDog's Avatar
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    I used about 2 1/4 32 Oz resin cans and you can see how thick it is, im not gona try standing on it since im a big guy...

    What do you think? should i throw 2-3 more layers on and use the rest of the resin i have?

    EDIT: if i add another layer sould i need to sand off the bondo?
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    1990 Jeep Cherokee
    2000 VW Golf TDI 4dr
    2005 VW GTI MKIV - SOLD

  4. #4
    Maximum Bitrate Altimat's Avatar
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    It depends on the shape of the fiberglass. If its a flat area it will need to be twice as thick as an area with compound curvature.
    Fabricator

  5. #5
    Well, He asked for it. WebDog's Avatar
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    well heres a pic of the box not much flat at all. let me know what you think.
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    1990 Jeep Cherokee
    2000 VW Golf TDI 4dr
    2005 VW GTI MKIV - SOLD

  6. #6
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    if in doubt - just put more layers on.....btw - have you bondoed it for the last time yet??
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  7. #7
    Constant Bitrate kalito's Avatar
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    http://www.caraudiohelp.com/newslett...***_layers.htm
    that's what i did and i think it work i also used about 3/4's of a galon of kitty hair from the inside to reinforce the edgesand the walls...
    http://www.cardomain.com/memberpage/465067/3
    that's my final product i can crank it up to almost the max and it hasn't come apart...
    yes it is very small box but i kicks and i need to X-tra space...
    "baby coming in 5 month...."
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  8. #8
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    good find Kalito!

    that's an interesting tweeter arangement...why did you end up going with it?
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  9. #9
    Well, He asked for it. WebDog's Avatar
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    Quote Originally Posted by Red GTi VR6
    if in doubt - just put more layers on.....btw - have you bondoed it for the last time yet??
    I Think when the sun comes out this weekend ill put a few more layers on just to be sure. Thats not my final bono job i just wanted to get a better looking / smelling product to stick in my car to test, it hits hard i need to fill with poly fill and test again. that was actualy just one layer of bondo.

    So you think i need to remove the bondo? or can i just put a few more layers on top of it?
    1990 Jeep Cherokee
    2000 VW Golf TDI 4dr
    2005 VW GTI MKIV - SOLD

  10. #10
    Low Bitrate killerfishes's Avatar
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    I would rip "not cut" one more sheat of mat into bits the size of your open hand and apply it to the inside.
    now working on my Dodge Dak
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