ok now im going to be building my first box, my friend is going to let me use his table saw. but i was wondering what sort of caulking i needed so the box would be air tight. thanks
there isnt only one type that will work. I used something like silicone window caulk or something like that. just get any silicone caulk from like walmart and it should do the job. if your cuts are nice and straight and you glued them down securely, the glue should form a seal quite well. just take your time and make precision cuts.