Fiberglass speker boxes

[kdh1]

I'm trying to figure out about creating my own fiberglass enclosures for my rides, but don't know what material is used before pouring the fiberglass resin... Anybody? I've painted them before but never mmade one.

[nine_deuce]

RE: Fiberglass speaker box

Fleece works wonders. And its fairly cheap

[bluecb7]

MDF (medium density fiberboard), Fiberglass matt, and speaker cover fabric.

[kdh1]

Thanx. Can I just pick the fleece or fiberglass mat at a fabric store?

[bluecb7]

The fleece you should be able to, as for the the fiberglass mat anywhere that sells fiberglass resin sells it usually, even my local Wal Marts have it.

[steelbluesleepR]

do not use fleece, it just makes it harder on you when you go to bondo and sand. it is just used for shape anyway, so use spandex or t-shirt material. those are much thinner and arent "fuzzy" so it comes out much smoother.

for fiberglass, you need to build the skeleton of what you want to build out of MDF, stretch and staple the material to the skeleton making sure that there are no wrinkles, brush on fiberglass resin and apply your first layer of fiberglass matte. with the matte, tear (not cut, you want the frayed edges) it into pieces about 4" squared, then press it onto the surface where you just brushed on the resin. pour a little bit of resin on the piece and brush it around until the whole piece is saturated with it. dab at the matte to get it completely stuck to the surface and there is no air trapped under it or in the resin. let the fist layer cure until it is tacky, then add another layer of matte/resin. keep adding layers until the piece is as strong as you need.

f it is just a trim piece or something like that, the 2 or 3 layers should be good. if it is a sub box or other load-bearing piece, you should layer significantly more than that. personally, i would put 10 or more layers on a sub box so it doesnt flex at all. also on sub boxes, it helps with strength and sanding to apply the fiberglass to the inside of the box. instead of putting it on the outside/face of the box, you cut down drastcially on sanding time if you reach inside the box and stick the fiberglass to the back of the cloth. then you jsut need to apply a skim-coat of bondo and sand with a d/a sander before you prime and paint.

edit: try to get the resin and fiberglass from boat suppliers or online, in bulk if you are planning on doing a lot of glassing,. both of these places will be much cheaper than buying from lowes or oreily's.

[kdh1]

Thanx for that. Its going to be the next project for the 90-4 door