I'm wanting to build a equipment box in the bed of my truck for work. I've never welded before but have been wanting to start. I figured this would be a decent first project as if I mess it up, it's not vital. I've planned for 1/2 inch squared steel tube. Do y'all have any advice on how or where to start? I wanted metal as I don't want it to rot like wood even though I have a bed cover. I've got a 2016 Silverado 6.5' truck bed. #industry source