How to brace box?

When putting braces along the edges of the inside of my box should i screw them in or just use a lot of good wood glue and make sure they are sanded with about 60 to get a better grip? the glue sounds fine to me. Let me know thanksdream it, build it, fiberglass it

I usually glue / nail sometimes screw (depending on the sub) my braces into place, I have seen braces come apart when not held with anything more than glue. Your box gets real hot in the summer and real cold in the winter, some glues tend to come apart under these conditions.Top Secret, I can tell you but then my wife will kill me.

glue and screw. subs create a lot of stress, and no matter how thick, all the wood will flex a bit causing glue to weaken over time.2001 Ford Fairmont

Alpine DVD, screen,

5.1surround processor,

5ch Class-T amp, TV tuner

and centre channel.

Focal 3way Utopia splits.

VDO navigation. Stinger cap.

Soundstream Exact subs.

MDF is made with glue.  Glue alone with hold the braces in forever if the box is built correctly.  If you are getting enough flex to weaken the joint and break the glue then their are not enough internal braces.  Amount of glue;  only enough to make contact, to much and you are just making plastic.  You have to screw it on or nail it though but that is only to hold it into place until the glue sets.  If you talk to someone at a prefab company they will tell you the same thing.  Most of them only use brads to hold it together.  If you have enough pressure to "Blow the Box apart" do you really think screws are going to do sh*t.  Well anyhow hands on experience and common sense cannot be matched.  Have fun.