fiberglass question

[RKPsk8er 10+ year member]

Here is the box design, not to scale. Driver on right. 6" aeroport on left.

my question is how do I join the fiberglassed bottom piece to the MDF top piece?

Also, how do I go about finding volume of total box since its an irregular fiberglassed enclosure?

thank you!

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[lbjshaq2345 10+ year member]

I used wood glue and more resin for mine.

 

[RKPsk8er 10+ year member]

can you screw through fiberglass?

 

[RKPsk8er 10+ year member]

so I had a sweet idea. would it hurt to fill the fiberglass section with water? i could do that to determine volume of it and use simple math to determine volume of top portion

 

[Megalomaniac 5,000+ posts]

you can fill it with water yes. or use packing peanuts.

 

[RKPsk8er 10+ year member]

hmm. also is it okay to have the bottom well section fiberglass only with no mdf? strong enough?

sorry for all the questions, I tried reading through the fiberglass 101 but there are a lot of dead links in there

 

[RKPsk8er 10+ year member]

anyone? up

 

[Megalomaniac 5,000+ posts]

yes you can use just fibergass only. if you layered enough it should be strong

 

[RKPsk8er 10+ year member]

megalomaniac, I was reading through your carputer thread the other day and and one of your old post reccommended against carputers running without a headunit for processing and such, has this changed any with new technology or anything? I want to build a carputer as an alternative to getting a dvd/nav indash but I want to run onboard audio directly to my amps.

 

[lbjshaq2345 10+ year member]

Fiberglass only enclosures are plenty strong for any application with enough layering. What kind of power will this enclosure be looking at? If you're going to paint it in the end, I'd recommend using FG cloth instead of mat for the last 2 layers, it will help a little in the sense it will give a somewhat smoother surface to begin working with.

 

[RKPsk8er 10+ year member]

It would be a single fi btl 15" off about 2600 watts.

the top mdf portion would be wrapped in gray vinyl the bottom would probably not be painted

 

[Megalomaniac 5,000+ posts]

It would be a single fi btl 15" off about 2600 watts.
the top mdf portion would be wrapped in gray vinyl the bottom would probably not be painted

If you can(or have enough funds) get some spectrum/sludge and line that fiberglass portion in it after you are done glassing completely. Or Get some Resin and body filler and make a milk shake and do the same if you dont have spectrum

 

[RKPsk8er 10+ year member]

If you can(or have enough funds) get some spectrum/sludge and line that fiberglass portion in it after you are done glassing completely. Or Get some Resin and body filler and make a milk shake and do the same if you dont have spectrum

does that give added strength or better sound or something else?

 

[WrenchGuy 10+ year member]

Use MDF in all the flat and wide areas. The fiberglass is weaker in these areas.

 

[RKPsk8er 10+ year member]

hmm.. well I'd rather just layer the glass and not use MDF because the point in the glass in the well is to get extra cubes. thats why im doing this instead of completely out of MDF