Anyone made a fiberglass sub box before?

[frosty23_45]

I want to mold one into the rear drivers panel on my durango. Seen some vids and such on how to do it, but would like some info/advise for when I actually do get around to doing this. Could be a while though.

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[JDHedman]

I have done a few..

seal off as much of the car as you can with plastic so the fumes dont get in as it will take weeks to get out

use tin foil and tinfoil tape

make your mold with 2 layers then you can pull the mold out and do the rest of the enclosure

I usually do a minimum of 7 layers of glass followed by 2 of soup glass resin and bondo mix and then bondo til shaped and then get it smooth as glass if your gonna paint or just cover with fabric

 

[JDHedman]

the12volt.com will be a good source for info

 

[Carls2001ws6]

I would love to make a thin fiberglass cover on the underside of the hood to give it that smooth custom look. I might ask for some help with that someday.

 

[SleeperLS]

I found that using fleece reduces the amound of work with layering the fiber glass. I made some doorpanels and just used a singlepiece of fleece stretched over the mold and frame I made. Used foil as stated above. The panel came out solid and strong as hell.

 

[Ron Vogel]

Does fiberglass enclosures tend to resonate? I'd imagine a sealed sub would do that. I've never built or heard one...just curious

 

[Oreif]

Does fiberglass enclosures tend to resonate? I'd imagine a sealed sub would do that. I've never built or heard one...just curious

Yes they can if it is too thin or you do not baffle the inside properly. I prefer to make the box out of MDF then make a fiberglass cover for it. This works better as you have the rigid strength of a wood box but can blend it's appearence with the interior using the fiberglass cover.

If made correctly, A fiberglass box will work fine.