Fiberglass NOOB needs help

I plan on buying some Audioque HDC3 12s when they come out so I wanna start on an enclosure.. ALtho I can design a pretty good standard box I **** at woodwork.. So I wanted to test myself with fiberglass.. problem I dont know how to do it and and I cant find good tutorials (link me if U got em)

ITs gonna have a MDF skeleton with mdf Sub mounting rings.. and I was hoping to use fleece or a similar material to cover the box with.. Do I use the hardener straight on this or must I add a 1st layer on the fleece 1st? thestuff that makes it hard is it the hardener/resin??.. then body filler? like I said Im a NOOB at it and would like to learn without getting flamed by a bunch of wise *****.. so here's what I have in my head

1) make the MDF skeleton.. including MDF mount rings and Braced and Port

2) cover with the Fleece material and make it smooth

3) add the hardener/resin and make it strong and dry and smooth as possible

4) Trim, Body filler, sand, sand, and make a smooth and clear shell to paint

5) Paint and install

Im shootin for 5cuft-ish at 40hz and have it ported at the rear So you cant see in the sloppy port lol

If I can learn it i will practice and hopefull get good enough.. Everybody has to start somewhere

 
o dam

5 cubes is a pretty big box, chances are youre only going to see the front face of it so why not make a box thats MDF except for the front? Theres no point in a full glass box in this application, plus you would be elimininating 75% of the work right there. You can have your MDF slot port on the bottom of the front if the box is going to butt up against the backseat and still make it easy.

The fleece- once the framework is done you basically stretch it over, keep it tight, staple and trim. Use alot of staples.

A gallon of resin comes with 2 tubes of hardener. Mix 1 quart resin with a half a tube (11mL) of hardener. personally I mix a half gallon at a time. Its good to have a pitcher with a spout because the resin gels pretty quick so its important to get it on quick, with a pitcher just pour that ish on and spread it with a chip brush instead of dibbing and dabbing. Its important to really soak the fleece, especially where it contacts the MDF, so go over the whole thing once, mix some more, and go over it again, and again. It takes more depending on how tight its stretched, but when the fleece has a nice 'glazed' look, youre pretty much there.

Let that harden a day, im not sure what tools you have but a sander is handy, dual action or even a mouse helps. When the resin cures theres a layer of surface wax and that has to come off (basically sand off the shine). Also sand off any loose fleece hairs/clumps if their there but if you hit it with enough resin there shouldnt be much. You want it as smooth as possible so theres less chance of air bubbles forming when you start glassing.

The glass work is kind of tricky, but put on some good gloves because this is the best way since you probably dont have fiberglass rollers. Take your time tearing up your mat, using bigger pieces on flatter spots. Plan out which piece will go where, dont overlap too much because that'll just make high spots and vice versa. Get a pan, mix some resin with a little less hardener, fill the pan. Dip the pieces of mat, let them soak and drip, and stick them on but try not to get air trapped underneath . Use your chip brush to spread out the excess resin and work out the air bubbles if any (with a good dabbing technique). Layers depends on the weight of mat used and shape of the box but youre going to want a good 1/4" at least.

I like to make my sub cutouts after the filler and primer, a rotozip works best. Make the cutouts too early and its likely youll make a mess on the rings. You also might want to reinforce the MDF/glass seams from the inside considering youre using HDC3's.

 
1) make the MDF skeleton.. including MDF mount rings and Braced and Port

yep

2) cover with the Fleece material and make it smooth

Stretch it until all wrinkles are gone , wrinkle in the fleece now will be a pain in your rear later

3) add the hardener/resin and make it strong and dry and smooth as possible

saturate the ever loving poo poo out of the fleece ( or what ever mold fabric you use )

4) Trim, Body filler, sand, sand, and make a smooth and clear shell to paint

nope , step four should be reinforcing your gigantic resin coated fleece blob with mat and or cloth. Considering your talking about a huge fugging enclosure, your gonna need several layers. THen you go on to step your step four

4) Trim, Body filler, sand, sand, and make a smooth and clear shell to paint

smooth is the key , you will be sanding for ever if your looking for it to be clear. Resin and mat isn't clear from the get go

5) Paint and install

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
You fellaz are a huge help!! I think I'll do an MDF with a Fiberglass face.. Cant believe I didnt think of it... Maybe it will work out ok since it is my 1st time.. Imma print off stayTuned's tut and try my best to do it like that

 
Activity
No one is currently typing a reply...
Old Thread: Please note, there have been no replies in this thread for over 3 years!
Content in this thread may no longer be relevant.
Perhaps it would be better to start a new thread instead.

About this thread

RipDaJacka

Banned
Thread starter
RipDaJacka
Joined
Location
D-Y Tennessee
Start date
Participants
Who Replied
Replies
5
Views
615
Last reply date
Last reply from
RipDaJacka
IMG_20260516_193114554_HDR.jpg

sherbanater

    May 16, 2026
  • 0
  • 0
IMG_20260516_192955471_HDR.jpg

sherbanater

    May 16, 2026
  • 0
  • 0

New threads

Top