The newbie guide to custom kick panels

Gauntlet
5,000+ posts

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Well people, after many trials and tribulations, I have finally constructed my first set of kick panels. Before I began this project, I was a complete newbie; I had never tried to fiberglass once in my life. But during the process I learned a lot of things, and I figured I'd share them with the forum. Hopefully this tutorial can help some people who are in the same boat I used to be in. So without any further ado, here goes nothin'

These are the materials you will need; you can get just about everything at Home Depot:

- A gallon of fiberglass resin

- A coupe extra tubes of hardener

- 2 or 3 packages of fiberglass mat

- A big box of disposable gloves

- Lots and lots of cheap brushes (use bristle brushes, not foam)

- A dropcloth, painters tarp, or garbage bags

- A Dremel with a fiberglass cutting bit (#542)

- Painter's tape

- Fleece

- Spray adhesive/liquid nails/epoxy/hot glue gun

- Wood dowels

- Sandpaper

- Body filler

- A mold release agent (WD-40, vaseline, a non-stick cooking spray, astroglide, petroleum jelly, etc)

- Carpet or vinyl or paint and primer

- Coarse thread drywall screws

First things first - before we do any work on the kicks, run all your wires and clear the area out. If you're mounting the crossovers in the trunk and need to run 2 sets of wires per kick, be sure to put some tape on both ends of one wire so you don't get them confused. Once you get the area cleared, it's time to begin taping it off with painters or masking tape; be sure to use the widest tape you can find. It's a good thing to be generous here; go at least a few inches bigger than you plan on making the actual panel. Make sure the tape is flush with the actual base, as the tape will form the shape of your mold. To avoid any resin leaking through and onto your carpet, use two layers of tape, criss-crossing the layers. If you have a newer car and want to be absolutely positive nothing gets on the interior, put some aluminum foil between the two layers of tape. Once resin gets on your interior, it is not coming off.



Now hold your baffle(s) up to where the panel is going to be, and draw a rough outline of the size of the panel. The only purpose this will serve is so you know where to lay the mat, so you aren't stuck with an extra foot of fiberglass and wasted mat/resin. When laying the mat down, remember to go about an inch or two past this line, to ensure that the panel will have uniform thickness. Then, apply a mold release agent onto the tape to aide in removing the mold from it later on.



Now comes the tricky part.....the actual fiberglassing. I'm going to do my best in trying to explain it.

First and foremost, get your workstation set up properly. An organized workspace will ensure a faster worktime, less headaches, and it will help you get into a seamless routine. This is what mine looks like:



^ On the outside of the car, I have a good amount of dixie cups pre-filled halfway with resin (2 oz), a big box of disposable gloves, a few tubes of hardener, and some brushes.



^ On the inside, I have a plastic tarp covering up the area that is not taped off, and I have a package of fiberglass mat cut up into pieces that are roughly five inches square.

Now, onto the fiberglassing! First, put on some gloves; believe me, you will need them. Mix up a batch of resin/hardener, following the manufacturers ratio. Before doing anything, brush a light coat of the mixture onto the tape itself. Take a piece of the mat and stick it onto one of the corners, remembering to go at least an inch over your line. With just your hands, try to smooth it out so you can (hopefully) avoid air bubbles. Dip the tip of your brush into the mixture, and poke it onto and through the mat, working from one edge to the other. Continue with this process until the entire piece is flush with the base and is transparent. Grab another piece, stick it next to the previous one, making sure to overlap a little bit, and repeat. Continue like this until you've worked your way around the entire panel.

Once you get used to the process, you'll be able to get into a routine (which is why an organized workspace is vital). This is how mine went:

1) Grab a dixie cup halfway full with resin.

2) Mix in the proper amount of hardener.

3) Put on gloves and grab a brush.

4) Start putting the mat on until the mixture is gone.

5) Throw the brush and gloves away and grab new ones.

6) Mix up another batch of resin/hardener.

7) Continue fiberglassing.

Now after doing this on three separate occasions, I have learned a few secrets, so read these and (hopefully) you won't make the mistakes I did.

1) Work in small batches. Don't mix up six ounces of resin/hardener, because chances are the working time of the mixture will be over before you're even halfway through with the batch. I found it easiest to work in two ounce batches, which is exactly one half of a dixie cup. But if you're only comfortable working with an ounce at a time, then by all means go for it. There's no need to sacrifice the quality for the sake of time.

2) Take your time. This is fiberglass, not Nascar, so there's no need to rush anything. Work very slowly, making sure the mat is laid down perfectly flush with the base. If you see an air bubble, squish it out by squeezing the bristles of the brush into it and outwards to the edge. Air bubbles are not good for fiberglass.

3) Don't use gobs and gobs of resin. Dip the tip of your brush lightly into your mixture, and work just enough of it into the mat so it becomes transparent. If you load the brush up with the resin/hardener and slop it onto the mat haphazardly, it will just drip down and create little "resin bubbles."

4) Don't use a painting stroke when applying the resin/hardener to the mat. As aforementioned, dip just the tip of your brush into the mixture, and sort of poke/jab it into the mat so it penetrates through.

5) And last, but not least, contruct a small "test subject" first. Just work on fiberglassing a few pieces so you can get used to the process and try to get yourself into a routine. Don't just go right at the project unprepared. The more comfortable you are with the process, the faster and better the final product will turn out.

Once you get this all done, it should look something like this:



Let this mold cure for at least 3 or 4 hours, I let mine cure over-night just to be on the safe side.

 
and that's TWO sets of kicks, mr. Bean.....! i did my koda pods too //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif and it's HELLA easy.

 
I would really like to get togethe with adidas and req and do a big ass car audio project. I would really like to share with you guys what I've learned over the years about custom car fabrication and also learn from you req what you know. It's too bad you don't live closer cause neither of us have jobs right now and it would work out great.... hahaha

 
well me and req are getting together at his place in liverpool, NY here on the 22nd of this month...

plane ticket?

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

there will be a thread for what me and req do //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
well me and req are getting together at his place in liverpool, NY here on the 22nd of this month...
plane ticket?

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

there will be a thread for what me and req do //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Pervs.......

 
Is glue the only thing that holds the wooden dowels in place? or do u fiberglass the base of them so they dont come apart?

Also do u fiberglass the inside of the pods as well or just the outside?

 
Just glue is enough. It only has to hold the piece of wood that you are fiberglassing over. After you are finished fiberglassing the outside, it is common practice to remove the wooden dowels (i use popsicle sticks) and spread out a layer of just resin on the inside. It will hole everything like it should

 
Why is this stickied? Those are hidious kick panels, very poor quality...ok so they're not that bad but the carpet around them look awful.

Rule el numbre uno - don't use carpet or vinel when your flush mounting them. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif (unless you know what you're doing.

EDIT: that was a little harsh, but I was drunk when I posted that.

 
roughly how much resin and mat will i need to do a set of kicks? a gallon of resin? a qt?
You might be able to get by with a quart, if they're small kickpanels, but just buy a gallen.

I just picked up a gallon for 30. Not too shabby when one quart if half that cost.

 
I agree.. and yet I disagree.. LOL! The fiberglass work, for a newbie, was informative and appears to have been done methodically step by step appropriately and with MUCH patience...This obviously makes for an AWESOME fb job! The only issue I have is the carpeting and the finish around the speaker cut-outs. I have not fiberglassed..YET... but I have covered many a box, seat, couch, etc. The only suggestion/improvement to this, that would take you to the next level, is if were to cross cut your "openings" and roll the material into the opening; so the cloth would have appeared to continue and not have shown those ragged ugly edges. You did a great job installing the ring symmetrically and it was a shame to see the carpeting of the pod done half assed.

Great job on the rest of the work tho! Every one of these fb posts I read encourages me and builds a little more confidence. My first project is going to be a wheel well box for two 12" subs. Look for a post soon!

 
roughly how much resin and mat will i need to do a set of kicks? a gallon of resin? a qt?
IMHO... a quart per pannel is sufficient. Unless youre putting 8's in your kp, you dont need alot of layers. I personaly use said amount for 6.5s with 3 layers of matte (either felt or 60 stitch cotton). Its proven to me that it works.

 
Why is this stickied? Those are hidious kick panels, very poor quality...ok so they're not that bad but the carpet around them look awful.
It's called a newbie guide, dickweed. They were made by me for the first time to encourage people to try it for themselves. Die, slow.

 
i have never had any experience (or even a chance to hear speakers in kickpanels) so i have a few questions.
Wouldn't your legs seem to "block" the sound from the speaker in the left kick panel. It just seems like your leg would be in the way.

Considering that a kickpael is an enclosure, would it give you better midbass response, like around 80 hz or so?

Would the left kick panel have to be pointed up more toward the drivers seat than the righ one?

Can the difference in air volume of the 2 kicks give a different sound from the speakers?

thanks for any help... //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif
Nice detailed walk-through. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

I thought I'd add some thoughts on these questions, I hope it helps!

Your legs can block the sound a little, I can hear a slight difference with a passenger blocking the right side if I really listen for it; but I don't think there's a good way around that, door speakers will do the same thing.

Some speakers may have better midbass response in an enclosed kick like that; but many (including the couple sets I've done) have much better midbass when you cut a good sized chunk out of the back to better simulate an infinite baffle setup. The size of the kicks can make a difference there too, they will frequently be too small to get a good response. You could check with the manufacturer and see what they recommend for that particular speaker. I've always played around with them after they are finished, try them sealed and if you are not satisfied try cutting a chunk of the back out. My current set started with a 3" diameter whole in the back and I ended up cutting out most of the back to get the best midbass response out of this set.

The left one would frequently be aimed up more like you said, but it depends on how you want to set things up. I personally tried to optimize mine for my own listening, so they were both aimed with my ears in mind and therefore aimed like that; but this causes the imaging to be a little off for the passenger. If you aimed them more evenly, it wouldn't be a good for you but better for the passenger.

I doubt there'd be much of a difference for the two sides unless you had to build one side much differently for some fit reason, in which case you may want to attempt to compensate. If you end up with a more IB type setup like I detailed above, you won't have to worry about it.

 
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Gauntlet

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