glue is a must but i would put screws to hold it together. go one layer at a time. icwoukldn't put any thing like dynamat in between it. you don't need tonnes of glue just a uniform thin layer. check out our web page to get see what it will look like. i'd also tell you that lots of screws too, cause i've seen 50hz rip apart the screws on our box. i do mean rip. It all depends on the size of your box. i'd also tell you to brace it with something. If your box has no pieces bigger than 20x20 then it might be ok. 3 layers is pretty darn thick. If you pieces are 40x50 then definitly brace it somehow.we used 2 inch angle iron on each inside corner. like i said , our screws ripped apart without it. it's like wire size. i'm sure a system would run ok with 4 guage, but 1 would be better, and 0 even more. double up on the strength holding your wood together. counter sink and then fill in later with bondo or resin.

[ February 16, 2004, 08:31 AM: Message edited by: Team Shadow ]

 

ya, wood glue will be the best.
If your first piece of MDF is screwed to the box; you can use an air nailer to attatch the next layer, and so on. Just make sure you give the glue time to dry before blasting it!!

 

do it BEFORE the glue is dried.

 

YES, make sure of this!!!

 

Another couple of things I would like to add.

1. the glue out.
2. You need lots of stuff to hold it together wether it be clamps, screws or weigh.
3. If adding a second sheet to an existing box try cutting the sheet about 1/8 of an inch smaller then the other so that it does not bind on the edges with the other pieces.

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