enclosure building question (1 Viewer)

[Craig Woodhall]

Do I need much internal bracing in a 12ft3 box if I make the box out of doubled up pieces of 3/4" mdf? (box within a box all sides would be 1.5")

Craig

 

[Dustin B]

12ft^3 or 1.2ft^3?
If it's not a typo and you are building a 12ft^3 box then definately.
This one is only 7ft^3 gross internal volume and the front baffel is 3 layers of 3/4" mdf while the rest is 2 layers. Some would call it a little over built, but still.
Link Removed

 

[Craig Woodhall]

Dustin,

Nope not a typo.. That is what I figured, just ends up making the box 200+ lbs..

Craig

 

[Dustin B]

Heh, 200+. Thomas says that box in the link I showed you is 300+ :p)

 

[Craig Woodhall]

that doesn't surprise me, hehe.. I think I will go doubled up with a couple doubled up dividers in the box.. This time it should be easier as im using butt joint with a brad nailer and glue, instead of screw/glue..

Craig

 

[Pete Mazz]

I wouldn't bother doubling up the braces. In fact, if you want to keep the weight down some, use plywood instead of MDF.

Pete

 

[Craig Woodhall]

Pete,

can you suggest some types of wood I could get from home depot that would work as doubled up braces, with prices?

Craig

 

[Jack Gilvey]

You could try well-braced 3/4" marine grade or Baltic Birch ply. More expensive, but much lighter and as effective in a sub app. as doubled 3/4" MDF.

 

[Craig Woodhall]

Jack,

i already got ahead of myself and bought/cut the mdf for the outside box and the inner box. I am gonna build the ouside box with MDF, then glue/brad a smaller box inside of the larger box.. Maybe instead of using MDF for the inside box and braces, I could use the ply. Do I need to spend the money on baltic/marine or could I use something cheaper but just as good as MDF?

Craig

 

[Jack Gilvey]

Go with the doubled MDF. Heavy, but effective.