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View Full Version : using wire mesh to shape fibreglass?



paterson3713
03-31-2004, 10:35 PM
<edit ignore this....things have changed....read thread>


Will this work? I guess I'll find out. I have a '79 vette, and I'm building a box to house a 10" sub and 2 6.5" mids with seperate tweeters. I'm first going to make the box for the sub, then attach pieces to either side for the speakers/tweeters, so that the sub has it's own air space. I built a wooden frame and attached the wire mesh to it. I guess I could've used fleece too, but at first I didn't have the frame, and I built it after because I felt the wire wasn't study enough on it's own to keep the shape I wanted.

How well will this work? I've never fibreglassed anything before, so this is a learning experience as I go, but I don't to screw up my first time. Will I have to do one side at a time or will the fibreglass stick enough to the sides so that I can do all the sides and not just the top?

<edited pictures out>

fiero_silva
03-31-2004, 11:10 PM
If your shape is square like it looks, why waste money and tons of time using fiberglass for it? Why not use wood???

Gauntlet
03-31-2004, 11:35 PM
^ x2

Your idea would work, when done properly. For one, fiberglass is strongest in curved areas, so building a completely square box out of fiberglass sort of defeats the purpose. Two, for what you're doing it would be easier to just use fleece or something of the like instead of wire mesh.

Also....I'd recommend not installing your component speakers on the same enclosure as the sub, even if they don't share airspace. It will create lots of imaging problems and won't sound nearly as good as it would look.

paterson3713
03-31-2004, 11:56 PM
^ x2

Your idea would work, when done properly. For one, fiberglass is strongest in curved areas, so building a completely square box out of fiberglass sort of defeats the purpose. Two, for what you're doing it would be easier to just use fleece or something of the like instead of wire mesh.

Also....I'd recommend not installing your component speakers on the same enclosure as the sub, even if they don't share airspace. It will create lots of imaging problems and won't sound nearly as good as it would look.

Well, it didn't start out as being as square as it looks. Our design changed numerious times, and ended up something like this. The speakers/subs would ben sticking out of the front as well, so the box wouldn't be completely square. We plan to round all lthe corners quite as bit as well. How many layers would be needed in the flat surfaces? I read somewhere that putting rope into the structure help brace it quite a bit?

Also, could you elaborate some more about the imaging problems? I'm not sure I understand the problem. It'll pretty much be like 3 seperate boxes, screwed together with the sub in the middle.

Gauntlet
04-01-2004, 12:09 AM
I guess I don't see what you're saying....the frame and corresponding mesh look flat...you may add something onto it afterwards, so the final product might not be flat, but the base is. That being said, it'd be a lot easier to just use some MDF for the flat areas, it will save you a LOT of time. With what you have now, you'd need at least 6 or 7 layers of mat, which would be costly, very time-consuming, and rather frivolous.

As far as the imaging, it's pretty simple. You want your mids and highs pointed at you, not mounted behind you. The latter will throw everything off, and quite frankly, won't sound good. You'd be much better off putting the components in your doors (if you have the room) or building kick panels.

TPABlazer
04-01-2004, 01:42 AM
Seems like a good way to waste time and money IMHO.

paterson3713
04-01-2004, 01:49 AM
Seems like a good way to waste time and money IMHO.


lol, yeah. now I think so too. My original box design was nothing like this, that's why we were going to use the wire, then it kept changing and ended up like this. There's more to it, but it still has many flat surfaces which should be made of MDF. Would be a lot quicker hey?

I'm probably going to rebuild it now. However, I'm still faced with the issue of imaging. Have you ever seen inside an old corvette? There's not much room. I have some good dash speakers in there now, but in order to put some door panel or kick panel speakers in it would take A LOT of modding. Do you really think it would sound that bad with mids up front and in the back? (both would be the same distance from you). The interior of a vette is pretty small, and open.

Gauntlet
04-01-2004, 01:54 AM
Pictures would help....but with some hard work and creativity, you should be able to make a set of kick panels that take up very little room.

ramos
04-01-2004, 10:16 AM
I got to agree with the consensus, MDF with be alot easier especially if it's going to be flat like your pictures indicate. As for the imaging there wouldn't be any. If you put any kind of power to the subs odds are you wouldn't hear much from the rear fill if anything at all. As for the modding let me look real quick and I may be able to give you some ideas. A neighbor has a 79' sitting in his garage right now. I'll be back :)

ramos
04-01-2004, 10:57 AM
Allright I'm back, his is actually a 78'. According to him they have basically the same interior. Anywho..... what about the space in the corners of the rear hatch latches, plenty of room there to glass in a couple of 6 1/2" 's. Or you could put them in your doors plenty of room there as well, You would have to consider mounting depth in the doors though. Just a coule of thoughts :)

paterson3713
04-01-2004, 09:34 PM
Allright I'm back, his is actually a 78'. According to him they have basically the same interior. Anywho..... what about the space in the corners of the rear hatch latches, plenty of room there to glass in a couple of 6 1/2" 's. Or you could put them in your doors plenty of room there as well, You would have to consider mounting depth in the doors though. Just a coule of thoughts :)

Thanks for making the effort man. I'm building it out of MDF now, with a fibreglass front so I can get the curves I want. Problem with doing door/kickpanel speakers is my car is going to be gone for a solid 3-4 weeks this saturday, while it gets painted.

I'm going to put the 6.5" on either sides in the back along with the tweeter, pointing slightly inward so it's not going directly into the back of the seat, and then have the sub in the middle.



One question though....what can I do to get the same finish on the wood as the MDF? I want to paint it glossy black afterwards and want it to look the same.

ramos
04-02-2004, 08:01 AM
Sand it smooth and prime it good before you paint it. And you'll be set. :)

ted_the_mexican
04-02-2004, 12:22 PM
wire mesh works really well to get the specific curves down but it is almost pointless for you to use so much time and effort putting it all together like that. Just use wood or incorporate some curves before you think about glassing it. A single freestanding box like that wont look nearly as good as something you put a little effory into! Some pics would be good too so we can see the progress. Good luck

paterson3713
04-02-2004, 07:20 PM
Okay, here are some pics. I'm going to glass the front of it with some curves. The middle will house my 10" sub, and either side will house the tweeters and 6.5" speakers. The sides aren't on yet because I'm waiting for my amps to decide how they'll fit best in there.

http://members.lycos.co.uk/sicchild/mdfbox.jpg http://members.lycos.co.uk/sicchild/mdfbox2.jpg http://members.lycos.co.uk/sicchild/mdfbox3.jpg http://members.lycos.co.uk/sicchild/mdfbox4.jpg


ps; that's not a crack in my back window. just a reflection of the antenna. (it made me run out and double check cause i was worried)

ramos
04-05-2004, 08:35 AM
Looks good so far. Now all you need to do is make a cover to fit over your hatch area. and you would never know anything is there. :)

paterson3713
04-05-2004, 11:28 AM
Looks good so far. Now all you need to do is make a cover to fit over your hatch area. and you would never know anything is there. :)

If you look close there is already a privacy shade. It has the black handle ;)

ramos
04-05-2004, 01:17 PM
Doh :D After I posted I got to looking at the pictures closer. I thought that was what that was. Looks good. :)

ted_the_mexican
04-05-2004, 05:07 PM
now thats more like it
keep some pics up because that looks like its gonna turn out pretty good. Don't forget to do all the aluminum foil/masking before you start to glass, though, that crap is messy
good luck man keep us updated.