I just glued everything to the insides. Used Gorilla glue to do it. Half way thru I ran out and used Elmers Ultimate Glue. I would use this in the future b/c it doesn't expand as much as the Gorilla glue. You could also use Titebond III wood glue. Had to use some staples because the box was warpped a bit. Make sure you buy a good trunk this would of made things easier. I made the seal on the lid like a regular humidor. The wood on the lid slips into the top of the trunk. just a little sandding to make it tight. If you are going to make one, make sure you got lots of clamps to hold the pieces while the glue sets up.