I also wanted to ask-    Should i glue and screw the box?   Or just glue it?   I'm scared of screwing it for fear of cracking the MDF, so i'm leaning towards just gluing and clamping everything.

wood splitting can be virtually elimated by predrilling.  I have never split MDF when predrilled.

There is one exception though...do not put a screw too close to an end piece...I would go any closer than 1 1/2-2 inches from the end

pre-drill Pre-Drill PRE-DRILL!!!

I've split many-a-wood panels because I didn't pre-drill. I'm waiting to invest in an electric brad nailer. I use Elmers' 2-ton strength glue, that stuff it STRONG. It took a few whacks with an 8lb sledge to break a piece of scrap wood free from a drop on the driveway.

I glue, screw then silicone the inside and outside of my boxes. I could probably drop them from the roof of my house and seams would be intact; now the boards breaking, can't help that.

I'm pretty sure it requires 1.5-2 sheets per 36x36 WO.

Don't be surprised if it sounds better than you expect. As long as it resembles the right dimensions and it doesn't leak too badly the WO is happy. It is a very forgiving enclosure.

The learning curve for cutting and fitting is usually pretty steep. Basically most people get it right after a few tries. The WO looks complicated the first time you build it. I would almost recommend building one out of some junky, cheap wood first just to get the feel for it before endeavoring to build a permanent one. I will say that wood glue and a brad nailer cut construction time by at least 100%.  Do the math:

1 brad nail = 1/2 second. * 1000 nails = 500seconds/ 60 = 8.3333 minutes

1 pre drill = 30 seconds
1 counter sink and swapping drill bits = 60 seconds
screwing in full length screw and tightening correctly = 45 seconds
------------------------------------------------------------------------------
135seconds per screw * 1000 screws = 135,000 seconds/ 60 = 2250minutes/ 60 = 37.5 hours

Seriously doubt the WO would have 1000 screws, but you get the idea lol

Take care,
Robert

BTW Gex, when you put it in that light, how valuable would an electric nailer or a air tank and air nailer be?

Yikes,
They say it's in the genes. You think you can sneak and make the cuts yourself? Or is it just a class project sort of thing at this point?

Can't wait till the project is done either way. It should be impressive

Take care,
Robert

I was getting a little impatient, so i quickly through something together for tonight.   I put my "1000 Watt"  car amp under the seat, and i have it pushing an EAW LA118z   18" Sound Reinforcement woofer.     The bass is absolutely insane, but i cant keep it in there, its a speaker i use for my DJ/Pro Sound rig.