Question:

I would like to make a custom made speaker box out of fiberglass so what kind of liquid fiberglass do i use.?

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I don't know were to get it or the name of the right fiber glass i need.

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  1. You can watch step by step videos below


  2. Speakers blowing apart are they?  I think I know exactly what your problem is... I am a 60 yr old boat builder, and I have a delightful young neighbor that has one of those annoying blooming - booming bass "whatever you call it" speakers mounted in the trunk of his car... Oddly enough, just as I knew the sound from his car was annoying... he knew that I built boats... so he came to me for help with his "problem".  And we made a deal... I would help him, in exchange for him turning off his blooming, booming speakers when he comes home at night.  His problem was that his speaker boxes (some he had paid considerable money for... were literally blowing apart... He in fact, showed me his last two... They had litterally shattered apart!

    Here is what we did, and what you can do... you need just enough 7oz fiberglass (boatglass) cloth - to wrap your new wooden speaker box on the outside only.  You also need "epoxy" resin. (The cheaper "polyester" resin will NOT WORK. These are two completely different resins). You will need to coat the inside of your wooden speaker box with the epoxy resin - this will "penetrate" and laminate your wood on the inside, and keep it from vibrating or splintering apart - as his were doing.  You can use a paint brush for this - but don't expect to ever use the paint brush again... So get several cheap ones to throw away after each use... I suggest two coats of resin on the inside... that is - one coat - let set, fully cure, then, another coat... You do not need to fiberglass the inside - the resin will do the job of preventing the sound waves and vibration from destroying the wood... On the outside, you will coat the box with the epoxy, and immediately lay on the fiberglass cloth (I use a cheap plastic squeegee to smooth the cloth out and into the resin, adding additional resin where necessay... when mixed, the white fiberglass cloth will turn clear as glass (oh, wow, that's because it is glass!) then, let dry, fully cure, and repeat... any extra glass cloth you can use around the corners for extra strength... This will give your speaker box the structural strength to stay in one piece... And as I mentioned, FOLLOW ALL MANUFACTURERS DIRECTIONS when using this stuff... don't let it scare you - it is easy - just wear gloves, and be very careful not to get the epoxy anywhere you don't want it to be forever and ever... It is in fact, the same resin used to make space shuttle and bullet proof windshields... when cured it is virtually unbreakable, and lighter and harder than steel (of the same thickness). That's why we love it so - in the boat building business!  You do not want to get a drop on you, your clothes, your shoes, (or on the ground - and then step in it)... Believe me, I know, I use the stuff daily... As long as you take care not to get it where you don't want it, it is safe and easy... If you totally coat your wooden speaker box with this resin... your speaker box will last longer than your next ten cars.  You will need EPOXY RESIN AND HARDNER - I suggest the MEDIUM HARDNER - this means it gives you a "medium" time to work with the resin before it gets too hot, or starts setting - it has nothing to do with how hard it is... You can expect to pay around $100 for a gallon of this stuff... I personally don't know where you can buy less than a gallon... maybe West Marine... or other retail Marine (boat supply) store.  PS... We are both so pleased! He doesn't drive down the neighborhood with his blooming - blaring... and he hasn't had to replace any more speaker boxes... LOL

  3. http://forums.vwvortex.com/zerothread?id...

    http://www.explorerforum.com/fiberglass/...

    http://www.bcae1.com/fibrglas.htm

  4. Fibreglass is hopeless for speaker boxes as it resonates too much, which destroys the sound you're hoping to get.

    I suppose if you're only going to listen to pop it won't matter too much. You could try packing it out with a fibre like wool or cotton.

  5. Fiberglass is glass fiber cloth with polyester or epoxy resin filling and coating it. You want a woven roving or weave and the resin to apply to it. You can go to any boating store or look one up. It is not easy to work with and boats are made in a smooth mold with colored resin applied first, then layers of resins saturated cloth. If you do not use a mold a tremendous amount of sanding is needed so that is looks acceptable. Wood is very fine for speakers, easy to work with and make changes. It is also less expensive, cleaner, and can be stained, painted, or cloth covered. It will also sound better.

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