really need help please
Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=17506
Printed Date: July 22, 2025 at 5:36 PM
Topic: really need help please
Posted By: pureRF
Subject: really need help please
Date Posted: August 12, 2003 at 5:32 PM
Hey I am in the middle of doing a very complex fiberglass box with an amp rack to hold 2 amps then glass ontop of that that is to hold 2 15's. I have done all the fleece and its pretty thick but its really rough and there are pretty big spots i need to be alot further out. Would it be alright to use a whole gallon of either fiberglass bodyfiller or reg car body filler as long as i get about 10 layer of fiberglass after doing that? Ive heard about it making the finish crack and all but if all the bodyfill is under the fiberglass that cant happen right?
thanks
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dream it, build it, fiberglass it
Replies:
Posted By: xetmes
Date Posted: August 12, 2003 at 7:03 PM
i like to finish the glass first then use some reinforced bodyfiller, IMO that reinforced body filler is damn strong, how much further out are you talking? also is this a baffle or just a covering for everything? I dont think i would ever put glass then filler then glass but who knows maybe some people do...? If i was doing a box and had to extend a side or something i think i would put some cardboard on the backside and foil or something the glass a few layer, then remove the backing and put the rest of the layers...
Posted By: pureRF
Date Posted: August 12, 2003 at 7:41 PM
That sounds good but with using the Bodyfiller I think i would be able to shape it better with the filler. Does neone see why this wouldnt work? Which would u suggest the bondo fiberglass filler or body filler?
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dream it, build it, fiberglass it
Posted By: iaudio
Date Posted: August 13, 2003 at 1:49 PM
What about expanding foam?
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Posted By: pureRF
Date Posted: August 13, 2003 at 2:05 PM
I didnt think about that. But can u get it at homedepot because i would rather just use bodyfiller if i have to order the foam. Has anyone ever bought expanding foam at homedepot? I have seen like cans, would those work?
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dream it, build it, fiberglass it
Posted By: iaudio
Date Posted: August 13, 2003 at 9:17 PM
that should work. You might want to test a small sample to see if the resin eats the foam.
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Posted By: skam213
Date Posted: August 14, 2003 at 12:42 AM
the resin is fine on the foam, i used it the other day, you can get it in the can at home depot.
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you can put a bullet in my head, but you can't kill a word i've said
Posted By: kustomcarluvr
Date Posted: August 14, 2003 at 11:41 AM
The stuff at Home Depot with the resin from Home Depot doesn't work very well. The foam gets eaten away by the resin. Bondo and then fiberglass again would not work well because fiberglass does not hold as well to Bondo as Bondo does to Fiberglass. I would build off of the existing fiberglass with mesh (chicken wire) or MDF, or something like that and fiberglass it again and then do a thin coat of body filler. Matt
Posted By: pureRF
Date Posted: August 14, 2003 at 4:37 PM
Alright those are to totally diff results lol but im just gonna get the foam then test it, if it doesnt work ill go with the chicken wire
thanks
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dream it, build it, fiberglass it
Posted By: pureRF
Date Posted: August 14, 2003 at 4:57 PM
skam213 wrote:
the resin is fine on the foam, i used it the other day, you can get it in the can at home depot.
Was it the kind in the metal bottle that has foam in the name? ------------- dream it, build it, fiberglass it
Posted By: xetmes
Date Posted: August 14, 2003 at 6:55 PM
i dont know you guys are couragous i would be scared to death of that foam crap around a car, whenever i use it on a window or somthing it ends up all over, i thinks its impossible to remove, well for me at least 
Posted By: pureRF
Date Posted: August 14, 2003 at 7:32 PM
im making the box outside of the car.
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dream it, build it, fiberglass it
Posted By: iaudio
Date Posted: August 14, 2003 at 10:02 PM
Try Great stuff (red can). Let it expand and then shape it with a cheese grater. I know the 2 part stuff from Select Products will work but I'm not entirely shure about the stuff that comes in a can.
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Posted By: kustomcarluvr
Date Posted: August 15, 2003 at 9:58 AM
I had actually used great stuff, and the resin warms up so much and because of the reaction between the two that it does not keep the same shape as you made the foam. Some spots stay right, and other turn into divits. I had this problem with a few different projects that I did, and I ended up using a whole lot of body filler to fill all of the divits. Matt
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