I've attached a picture of the panel I need to make a box to fit in. I would love to be able to mold the box outside of the car, but I'm concerned with the trunk panel folding over and not keeping its proper shape.

What are my options?

for the reasons you stated above, everyone i know does it inside the trunk panel.

Mike-

Yep, do it inside, then once the rear mold is done, you can remove it.

Crap, I was hoping I could get away from having to worry about my interior.

So where do you all get your supplies for glassing?

http://www.tapplastics.com give em a whirl, and happy fummin to ya dude, yer in for a hell of a good time lol

lay masking tape or blue painters tape all over the area you glassing. be sure to tap well, evenly, overlap, and make a good 2-3 layers protecting your interior. then lay tarp over the area your not glassing but dont want the mess to possibly spill on. as neonrider said. glass, let it dry. pry out the back mold. then you can work from there using dowels, circle rings to make the baffle. lay your fleece or stretchable fabric over the whole mold and ring piece. stable on the back. glass that. let it dry. make it solid. then you can primer it, sand it, primer, sand, primer sand, then it just paint sand, paint sand, paint paint paint, then clear

or you can skip that step if your upholstering it.

Good luck mate.

Is this a good list of what I need to buy? I found it on another site

* 1 gallon fiberglass resin & hardener (Home Depot, about $25. Comes with 2 tubes of hardener.)

* 1 extra tube of hardener (Home Depot, about $6.00. The 2 tubes that come with the resin aren't sufficient unless you're working on a hot day.)

* Fiberglass cloth (Home Depot, each package contains a 3' x 9' sheet. I used 5 sheets. About $6.00 per package = $30.00)

* 1 quart Acetone for soaking brush and cleaning up (Home Depot, about $8.)

* 1 paint brush, 2" wide or less, cut bristles to 1" length (Home Depot, about $1.50)

* 3M spray adhesive (Home Depot, $don't remember)

* Speaker enclosure carpet (Home Depot, $don't remember)

* 5/8" or 3/4" MDF (I used a scrap piece I had lying around)

* 24" wood dowel stick, 3/8" or 1/2" thickness (Home Depot, abu $3.00)

* 1 piece of stretchy cloth (At least 14" x 10". I used an old t-shirt.)

* Hot glue & gun (I used superglue, but hot glue would have worked better)

* 60 grit sand paper

* Duct tape

* Cardboard (thickness of standard cardboard box)

* 8 T-nuts, #10-32 (Home Depot, about $5.00)

* 8 #10-32 screws (Home Depot, about $3.00)

* Banana plugs (Radio Shack, about $4.00)

Personally I'd go to an art store and not use the HD crap. (do they even sell it at HD?)

Where are you located, perhaps someone can give you a specific place to get it.

Buy fresh resin... please please please. Any marine or autobody supply shop will have good fresh resin.