How many layers should I make my custom fiberglass enclosure that will be placed in the spare tire wheel well if I am using fiberglass cloth?

 

Some people actually use fleece to cover with fiberglass. Kinda like an old sweat shirt material. It soaks up the resin, and it's thicker on each layer.

I personally used a cloth too, the angelhair stuff, simply because it was free for my taking....can't beat free!!! I made a box for one 10" sub (@ .8 cubic ft), and put at least 3 layers of cloth on every side. On bigger sides, where there's alot of surface area, I put 4 layers. Then I have 2 layers of resin alone on the outside, and 2-3 layers of just resin on the inside. Just poured a couple of cups in and swished it around to spread it out evenly. Did this twice. It's definitely solid, and that's what I wanted. It weighs about 15 lbs by itself, and with the speaker, weighs close to 27 lbs.

Hope this helps......DMAN

 

yeah thanks. I plan on making a box for my 2 12" Perfects hopefully starting tomorrow. So if I make bout 3 o 4 layer using the cloth and but lots of resin on inside and out after the last layer it should be strong enough? Would I be able to remove the box from the car after the first layer dries throughly?

 

Alot of people do that. You put like a plastic and aluminum foilor something to keep it from sticking to your carpet and stuff, then put the first layer, let it set, then take it out and finish the other layers.

BUT,,,,I didn't do mine that way. What I did was, I used some bendable screen that was stiff enough to hold it's shape, the kind with the little 1/2 inch squares and used small pieces of wire to tie the pieces together. I made a mold of what I wanted my box to be (over my passenger fender well), then took THAT out and glassed over it. Basically, I made a box out of the screen, then fiberglassed it. First layer went slow, cause you have to do each side 1 at a time, the glass didn't stick as well as I hoped to the screen when doing multiple side at the same time. After that, each of the other layers flew by. That way, I didn't get that nasty fiberglass smell in my car for like 3 weeks, and I NEVER had to worry about fiberglass on my carpet. 8-D

It took me longer to do it this way cause the screen was a headache sometimes, plenty of scratches....ouch!! Looked like a cat fight for a while...hehe but after taking my time and being careful, it came out great.

Hope this helps......DMAN

 

You can use whatever you want in the middle. I mean as core material. All you need is a really good bond to the core material, sheer strength. The overall thickness determines the strength, along with the quality of the bond between core and outer layer, as well as the quality of faric used in the outer layer. So if the outer layer is fleece, don't expect the box to be much stronger than fleece. There are also things, such as hollow glass bubbles and wood flour that can increase the voume of resin you have available. The glass bubbles mixed with resin can nearly double the volume of resin, and significantly decrease the density.