LOL, I use wood glue, then finishing nails, lots of them, then I caulk the inside corners with cheap latex caulk. Never had a box come apart and the finish nails look nice too. Just got to be careful not to dent the MDF with the hammer or you will have a bunch of dents.
I would say the BESTEST way to build a box would be to use woodglue and counter sunk screws with predrilled holes, then caulk all of the inside corners. Then you could go from there with things like fiberglass to stop the MDF from letting your air seep through, but only if you are serious about box building. I'm no expert, just sharing my way of doing it and my opinion in this wonderful little thread that went several pages just arguing about whether or not you can "just use wood glue, nothing else" or not.... LOL
I would say the BESTEST way to build a box would be to use woodglue and counter sunk screws with predrilled holes, then caulk all of the inside corners. Then you could go from there with things like fiberglass to stop the MDF from letting your air seep through, but only if you are serious about box building. I'm no expert, just sharing my way of doing it and my opinion in this wonderful little thread that went several pages just arguing about whether or not you can "just use wood glue, nothing else" or not.... LOL