I have a coworker at the shop he is on his first big project and we are arguing. What gives you the strength in a fiber glass box to stay together and with stand the air pressure of the sub so it does not fall apart? Is it the fiberglass by making thick layers or is it the body filler. I always thought you made your box strong with FG and FG Matte. But he says you only need like two or three layers of FG and then bodyfiller the crap out of it to make it solid.
Any help from you pros ?
your friend is wrong. Go ahead and put one layer of fiberglass on your box and STACK the filler, and see how long it holds up :). Seriously though, the resin/matte combo is what holds up. 5 layers of that and you have a pretty solid box...its even hard to drill thru it. The filler is just for shaping and smoothing your piece. So next time you see your friend, give him a kick in the cherries...not a kick of cherry like the commercial says :)-
-------------
Hustle, Loyalty, Respect
.....body filler has no structrual strength what-so-ever....
the strength only comes from the FG mat (for strength in all directions) cloth (for strength in 2 drections) biaxial cloth (also for strength in 2 directions)
the less resin used the better too...since it also dosent add to the strength either but only the weight of the project...
kitty hair / duraglass, will add strength...and a boat load of weight, and will also help prevent large flatter projects from warping...
ALL flat panels should be made from 1/2" or 3/4" MDF
-------------
Fiberglass Guru.
oh yea and where can i get some duraglass any place online have it cheap or any distributors that i can call
i m wonderin...which can make a stronger bond... kitty hair / duraglass or fg mats...and if i try to make it 8 layers...how durable can it b..plannin on makin a sealed enclosure for my 12" mtx thudner8000...can any1 enlighten my confusion?.thanks in advance
pmh61] wrote:
h yea and where can i get some duraglass any place online have it cheap or any distributors that i can call
Duraglass is a brand name ( like Kleenex ). You can ask for short strand fiberglass body filler and it will be the same stuff. Use long strand for larger areas and short strand for smaller areas.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
kelvin--- wrote:
i m wonderin...which can make a stronger bond... kitty hair / duraglass or fg mats...and if i try to make it 8 layers...how durable can it b..plannin on makin a sealed enclosure for my 12" mtx thudner8000...can any1 enlighten my confusion?.thanks in advance
Fiberglass matting has to be used as your building up the walls of the enclosure for structural strength. Anytime there's a curve the fiberglass is stronger but in the flats it's weaker. Duraglass is essentially a reinforced bodyfiller & adds a minimal amount of structural stability to an enclosure. Duraglass is used more for smoothing out surfaces or filling in larger dips where strength is needed & where bodyfiller alone will not suffice.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA