Ok, so... going to finally gut the hatchback in the Z and replace it. Going to build some fiberglass enclosures for a pair of 12s. I expect I'll be doing 2 separate enclosures, one for either side, but it's possible I could end up with a single enclosure up by the seats, with subs firing backwards or upwards. I haven't decided yet.
Anyways, I built a fiberglass sub box once, years ago, in my 240sx. I just can't remember what all I used, in terms of how much material.
Fiberglass stuff will come from US Composites, which I think is still probably the best place. Looking at maybe 3 yards of 3/4 oz chopmat, and 7 yards of 1.5 oz chopmat. I also think I have a few yards I never used up in the attic - should still be good, right? Can't imagine any problems with it, but I did discard the old resin years ago. 3 gallons of 435 polyester resin should be plenty, right?
I am really just totally guessing here, I have absolutely no idea. I'll likely be doing the first layer with fleece, then building on that. Last time, I laid down the back side of the sub box, which conformed to one side of the hatchback, got a couple layers, then pulled it out, trimmed it up with a Dremel and laid down more layers to thicken it. Then I took wooden dowels and cut them to length, hot-glued my mounting rings in position, stretched my fleece over it all and then glassed it all up. This time I was wondering about trying something different...
I remember seeing a video where someone took large pieces of foam and used them to make mock shapes, then 'glassed over them and used something later to dissolve/melt the foam to get it out of the new fiberglass enclosure. So I could get some hard foam that was amenable to shaving/molding, put a rough shape to it, fit it in position in the hatch, then take it in and out while shaving small amounts off to mold it into what I want - then fiberglass over that and melt the foam out later. Is this a decent option? Or am I better off using small thin wooden strips and dowels to make a rough skeleton and stretch fleece over it like I did years ago? It's going to be a pretty complex box shape, I guess.
The more I look at things, I think I'm going to probably end up with a larger, ported enclosure for these Mag V3s... so that's going to impact things.
I guess that's it for now, I'll be doing more research over the next few days. Install will be right in the middle of May - about 10 days from now.
Any suggestions appreciated.