Thread: Fiberglass subwoofer box.

Hi Guys

I decided to make a Fiberglass sub box for my tazz and share my experiance as a tutorial.
This is how it came out.


What you need:
11L of Fiberglass resin
Hardner
6m of Fiberglass mat
5 Roles of thick Masking Tape
10 meters of Foil
Thinners
Brush
Wood
Stretch material
Carton Boxes
BodyPutty
Spot Putty
Paint
Wooden round sticks
Sanding Papper
And you need alot of paitance for the job ahead!!!. And you are going to itch a lot!!!


Firstly I took out my old Box.



Because I did not want to struggle to take out my spare wheel I
decided to mount it to the back of my Back seat, so that when I
leaned the seat forward I could easy retreive the wheel.


I cutted out the shape of the wheel in the base wood.


Then I started to build out of carton box for the moulding of the Fiberglass.



Just for curiosity I then placed all my equipment in to see how it would fit best.


Then I started to apply the whole trunk spase with masking tape.
After the whole trunk had masking tape inside I covered that with a layer Foil.
Note: You have to do this to be able to remove the moulded Box.
And believe me with all the precausions I took I struggled to remove the box!.
I then started to paint Fiberglass mat and ressin to get the inside mould of the trunk.




After 3 layers of Fiberglass you can remove the fiberglass mould from your trunk.


Now you must apply3 more Layers to the box.
With a permanent marker you can scetch where you need to cut off the excess fiberglass



Now you can do a test for fitment.


Cut out the rings for the Subwoofers and see if thei fit.



With the round wooden sticks make a placement for your sub rings. I
used a gluegun for the job. Use enough glue for this step or else the
frame will break when you pull over the stretch material.
I then placed the subs in the wooden rings to see if my trunk still
closes.




Now you can stretch the cloth over the box and be sure you
use enough glue on the sides t secure the moulding.
Also note that when you glue on the sides that you go way down
because when you apply ressin over the cloth it will pull loose.


Now start you can start to paint on ressin to the cloth. I think it is called fleecing.
The fleesing is not strong enough for the box.You need to put 5 to 7 layers
of fiberglass and ressin to complete the prosess.



Now for the hard work...
Now you have to sand off the excess fiberglass and apply Bodyputty and also
need to applie spotputty for small bubbles.
I sanded about 18 hours for the right result.



Cut out of wood the back board and the board that comes over your amps.
The bottom wood I just carpeted.
After all the sanding and hard work I ended up with this.


C&C are welcome or any quistions. O Yey exquise my English I spoke it since I was Twice,,, he he