Planning my first welding table build for next week, have a couple of questions. It'll be 5-6'x3', with at least a 1/2" thick top. 2x2 frame and legs, not sure what thickness yet. I'm planning on building a tool box into one end since it'll sit right near the front of my '71 Bronco, and the welder will roll under the table on the other end for storage. Not sure how I'll pull that part off yet, need to finalize the design. Any suggestions? Also, any tips for getting the frame really flat, given that I don't have anything flatter than my garage floor to work on?