do you guys screw 3/4 MDF directly into the other piece? isn't Fiberboard bad for screwing through the side or is that plywood?
and what kinda of glue do you use to reinforce it?

 

I would "pre-drill" if you're using screws...probably not a bad idea too use them. drill about half the diameter of the screw,so the threads have something to catch. for glue?...can't go wrong with "liquid nails" brand glue. you should go back over the inside with silicone or more glue to make sure it's air tight.


BTW-use sharp screws to prevent splitting, and make sure you drill straigt into the other pieces....check out some other unfinished boxes to get some design ides.

 

I always drill pilot holes for the screws and countersink them. I use 1.5" wood screws and use tite bond or elmers wood glue (the yellow stuff) on all joints.

 

I would also pre-drill as everyone else has suggested. However make sure you use wood glue. It is the glue that is suppose to hold the box together. The screws just hold the box together while the glue dries, but i'm sure that the screws add some strength to the box so don't remove them when the glue dries. I use 1-1/4" drywall screws and Elmers wood glue.

 

I also drill pilot holes and countersink. And also, the screws are what are going to provide the majority of the structural integrity of the box.......the glue just aids that. Just make sure you take the time on this, I've seen some really horrible boxes, held together with just glue, some with nails, even a couple (from the local sound shops) that were held together by a couple of staples and their carpet.