New to fiberglassing questions

[lil azn 06 10+ year member]

Say i was to rebuild it,

Would birch be fine to use as the floor mold and as the baffle ring?

How would i eliminate the bubbles? Just press them out before it dries?

Ripping the fiberglass mat always made loose ends of fiberglass stick up. Instead, if i was to cut the mat wouldn't it be more effective?

Is there a special brush to use when working on resin? I am using just a regular painting brush (non foam) and it seems to stick onto the fiberglass.

 

[SRim23 5,000+ posts]

heres a nice s2000 install i came across a couple days ago. maybe itll help

http://www.s2ki.com/forums/index.php?showtopic=560816

 

[fbi90909 5,000+ posts]

****, next time i get a hold of some fiberglass mat i'm going to take a video of how to lay glass.

 

[lil azn 06 10+ year member]

I think it is coming along nicely now. The stippling technique worked great. Thanks

Old Box

New Box

 

[audiobahnuser18 5,000+ posts]

Not bad , try to get your hands on some actual like glass mat that they use on boats not chop mat it's alot stronger and works alot easier.

 

[lil azn 06 10+ year member]

Blah, if it was up to me, i wouldn't be using this crappy bondo resin/mats. For my own fiberglassing projects I'll have to up the ante and get the good stuff //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

So 4 layers need to be laid down before it is pulled out. How many layers would a typical fiberglass box incorporate before it can be "finished?"

 

[fbi90909 5,000+ posts]

depends on the subwoofer and the pressure it can create really. you could do 7 layers. and be good with it. at 7 layers it should be quite solid and not flex much of any. also at 10 you could probably stand on it.

when i did an enclosure for my 15"XXX i went with around 15-16 layers, even with sooo many layers, it still flexed.

your second attempt is looking really good. remember, patience is key!

 

[lil azn 06 10+ year member]

Do i need to do 7 layers where i am fleecing as well? Will a staple gun used to hold down the fleece really go through 7 layers of fiberglass?

 

[fbi90909 5,000+ posts]

you don't need to use staples when attaching the fleese to the back side of the enclosure.

get a hot glue gun and lots of hot glue.

what you want to do is wrap the fleece and hot glue it it down.

let me try to explain this.

prep work you will need a bowl of ice and some ice water.

give me a minute while i type this up and kind of draw a picture or 2.

EDIT:

ok, here is a little picture of what you should do.

basically you want to wrap te fleece around it. instead of using staples, use hot glue. imo start at the top.

leave at least an inch from the tip of the enclosure to the point of where you are adding glue. you want to add resin to that area later on when you are wetting the fleece, well what you need the ice for it to help speed the cool down process of the hot glue, basically at the top lay a strip of glue maybe 1" long, press the fleece in, then rub it down with the ice to cool down the hot glue from being all jelly and shit.

then stretch from that area to the bottom of the enclosure and then lay a strip of glue again, press in the fleece, then cool it down with the ice. now, just work your way around the rest of the enclosure, remember to leave at least an inch of space between the glue and the tip of the enclosure. when you resin that area up the fleece will bond with the outserskin of the enclosure.

before you put on the fleece have you set your speaker ring and dowels in??

 

[lil azn 06 10+ year member]

I am about to go there and make the baffle and dowels now. I assume you can just hot glue the dowels into position? The box will be curved awkwardly in the right corner. I didn't think hot glue could hold the strength of the fleece especially after stretching it? I guess i will find out.

Thanks

 

[lvjeffro 10+ year member]

http://www.gadrivers.net/~dwicker/fiberglass.html

I thought this tutorial was very good on the subject...HTH

 

[lil azn 06 10+ year member]

Here is the box fleeced with resin.

After throwing the fleece on with resin the box would barely fit into the trunk mold anymore. I guess i will have to cut it (Picture below). How many layers of fiberglass must be laid onto the fleece? I plan on doing a layer in the inner areas of the box as well.

 

[lil azn 06 10+ year member]

Wait am i supposed to fleece/resin/fiberglass overlaying the mold or do i just basically stop where the mold ends?

 

[lil azn 06 10+ year member]

Here is a picture for the question above