cwh wrote:
When I had my metal shop, I built a 4x4x3.5' welding table with a 1/4" steel top. Anchored it to the floor with red heads. I did that because I had to beat on steel a lot in my fab work. Not being solidly mounted would be a problem. Keep that in mind. I also had my big bench vise on that table, another thing that needed stability. YMMV.
I have something similar in size, also bolted to the floor. I built it out of scrap metal I got from some industrial railings - 1x2 and 2x2 steel with 1/4" wall. Nothing beats a table you can really beat on if necessary. I've managed to break a 5" vise in half using excessive leverage, and the table never budged.
In my shop, I've got a lot of things attached to spring-loaded reels on the ceiling. There's an air hose at the back where I do most of my work and one at the front by the door, makes it easy to always have air close by but not constantly underfoot. I also have a couple of reels with extension cords so I can just reach up and run out as much cord as I need.