not sure what type is best for MDF?? The heavy duty??

 

heavy duty is what i used

 

Use regular wood glue it makes a better bond. If you need to seal it then use silicon on the inner edges.

 

thought about using that Gorrilla Glue any thoughts

 

black silicon works good for sealing the box.

 

Never used it. For as many boxes as i build its not worth the extra money imo.

 

gorilla glue is a pain in the butt to use , but its the best stuff to use.

 

Gorrilla Glue.
Or some form of wood glue.

When the (WOOD) glue sets, it will be stronger then the actual mdf.

 

You can use wood glue like Titebond or Elmers Yellow (not white!!)

 

Gorilla Glue is the bomb. And like they said it will cure very hard not to mention its wateproof and slightly expands as it drys to give a very nice, air tight seal. I don't think its hard to use, just like anyother wood glue. Just take a damp cloth and apply to one piece of material. Apply glue and put together. THen I like to use a few screws on each piece rather than set up clamps, that way you can continue to work while it drys.

 

Semper Fi....shouldn't you use a combination of glue and screws when building a box?? That's how I always figured you were suppose to put one together. So my best bet for a strong box would be gorilla glue, wood screws, and silicon to seal all joints?? How about the silicon, what would be the best choice or does it really matter??

 

Of course use screws. As for silicone, no it really doesn't matter how much you use. It doesn't take much though, just enough to seal it air tight.

 

gorilla glue is pretty bomb. we used it in teh shop at school and you could glue anything to anywhere( we've glued a quater to the floor and other random stuff to the walls) just like super glue tho.. dont get it on urself unless u like semi perminent bonds with urself and the things you touch

 

Use wood Screws....

 

I intend to try liquid nails myself sometime soon. I have a feeling that I might like it better than wood glue. My main complaint with wood glue is that with something as absorbative as MDF, most of it soaks in and doesn't create as strong of a bond at the glue joint as it does with solid woods. While it's still sufficient for holding enclosures together, the idea of something thicker like Liquid Nails intrigues me. Not only will it not soak in as much, but it'll do a good job sealing tiny gaps between the wood, negating the need for silicone.

Either that or the stuff just plain sucks. Either way, I hope to find out soon.

 

Liquid Nails Adhesive Caulk is what you want.

http://www.liquidnails.com/caulks/ac-138.html

Those are the key specs to look at.

For instance, the Shear Strength of the "Heavy Duty" stuff is 240 PSI, and the Serv. Temp is 0*-140*

I've only used the Heavy Duty and had excellent results, but if you want something better, this is it.