Yet another fiberglass thread

**deligc** · 06-27-2004, 09:35 PM

Hi all,
Ok, after a great deal of research and reading of tutorials (Thanks AJ Quick and all you others out there who put the time and effort into these things) I am ready to begin construction of my sub box for my 02 regular cab ranger. I have a couple of quick questions about fiberglass mat. First I'm currently stationed in ND so local store/availability is limited. So I searched online and found this:
Fiberglass Mat
You may note it comes in two weights 1 1/2 OZ per sq foot and 3/4 OZ per sg foot.

Is the heavier stuff stronger?
or Is it that the 3/4 Oz weighs half as much but is just as strong?
The 3/4 Oz is about five times as much as the 1 1/2 for a 50" x 3 yd roll.

Or did I miss something entirely here?

Has anyone used this brand? is it any good? I would like to point out that the local walmart sells a bondo brand? mat for 4$ for 8sq feet. and the local parts store wants almost 6$ for the same package.

Thanks

**MAXXMODDER** · 06-27-2004, 09:42 PM

ebay is a great source of fiberglass mat cheap. as for the weight I'm ganna go out on a limb and say it's the thickness of it the stuff bondo sells is fairly thick and hard to contour small areas (if your using it on a small mold) thats m .02 and no I dident really answer the question sorry

**deligc** · 06-27-2004, 09:45 PM

LOL, Thanx for the info maxx, I will have some pretty tight curves to follow so I'll stay away from the bondo mat. I guess in the long run thinner is better since you can always add more layers right?

**AJ Quick** · 06-27-2004, 09:48 PM

Their prices are screwy. Looks like it costs less to get a roll 3 times longer. Not gonna order anything from them anytime soon! The weights show how many actual strands there may be in the fiberglass. The 1-1/2oz would be thicker, and stronger.. If you are ordering online, the 1-1/2 oz would be great, as you can do less layers with it than you would the 3/4 oz. The more strands, thicker the mat, the stronger everything would be.

I had no problems with the Bondo brand mat.. but it is a good idea to do a lot of layers when working with the thinner stuff.

This is assuming that you are doing a sub enclosure like you said.. 1 or 2 layers of the thin bondo stuff would be fine for things requiring less strength like a custom dash.

**deligc** · 06-27-2004, 09:59 PM

Ok, I started doing some searching on Ebay like maxx suggested and I found this:
Glass Mat Roll

Thanks for the help AJ I appreciate it. I am planning to build a glass encloser for a pair of 10" Polks (Ex Series) not much I know lol but its enough for me. the problem is the space behind the seats is cramped and a bit odd. So to maximize the air space i plan to build a glass box to fit nice and snug in there. My last question is in an application like this do you think it would work better to have a narrow roll such as the link I posted here or a wider roll such as the 50" ones on the original website I posted from?

Thanks again for all the help

**AJ Quick** · 06-27-2004, 10:22 PM

Well you are probably gonna cut the mat up into smaller peices anyways.

I used like 2x6" strips, sometimes smaller, sometimes bigger.. Never used a 50" peice or a 12" peice though. Just see how much it is per foot and and which is more cost effective.