I'm building a box and amp rack for the back seat area of my car and need to know what's a good strong wood glue to use and adhesive for the carpet. Also if anyone knows a good way to attach plexiglass (my guess involves pre-drilling holes in the plexiglass then screwing it into a frame then attaching it to the main box) or such to a wooden box to build a window that'd be greatly appreciated as well.

 

if youre going to use MDF, then the smooth side of it does not allow wood glue to soak all the way in. i would use subfloor glue, it adheres very strongly and stays relatively flexible. for the carpet you could use 3M spray adhesive, and for the plexi, i would run a bead of silicone all the way around and then lots of screws to hold it in place

 

pre-drill and make it so the head of the screw sets flush with the surface on that plexi. you need to silicone every edge on the inside so it doesnt whine and the box will sound better.

 

^^ what they said

 

Polyurethane glue does it ALL. Ever see the "Gorilla glue" home depot sells? That's a name brand version of polyurethane glue. It's stick metal to wood to stone to whatever. It expands as it dries. It'll remove any and all hair if a drip hits your forearm or leg (Don't ask).

I glue the joins, clamp it, then drill pilot holes every 2 or 3 inches. Then take a bigger bit to counter sink holes for the screw heads (so it sits flush). Then use sheet metal screws in MDF. Make sure the pilot hole is big enough, or you could split the MDF. If you do that right the clamp is not needed while it dries (the screws hold it together tight enough). Then run an extra bead of glue down the inside seams and let it try.

For carpet, just smear a very light layer of the poly glue on the mating surface. Trust me, it'll never come off, no matter how old, hot or cold it gets. Just make sure it's a small layer as you don't want it to expand through the carpet fibers. Just keep it as thick a piece of paper or two.

 

ive seen that gorlilla glue once or twice. one of the guys we contract for suggested we use it once, but we never do. just set in our ways i guess

i do interior trim for a living, so i work with MDF every day, and when i build my box im going to use subfloor adhesive and 2 inch trim nails for the whole box. it doesnt dry as fast, but it seals very well. on the inside, my friend is going to fiberglass the whole thing. not sure why but im guessing it will seal everthing and make it a perfect solid sealed structure.