I did a long time ago and have been pretty much very happy with it. It's a 1/2 thick piece of steel top 3' X 4'. I had bought a 20" length of 3" X 4" X .120 Rectangle tube for another purpose but only used a little of it so that is what I used for the legs. I had a set of old 6" lock casters and welded them directly to the bottom of the tubes. Just got lazy and didn't feel like making caster plates and doing all the bolt hole drilling. It's been together for nearly....15 years??? about. If I ever do have to replace the wheels I will make plates so I can bolt them on.
Just about a year ago I scotch britghted the living hell out of 100% of it down to clean raw bare metal. Then acetone and 91% Isopropal Alcohol cleaned it till white rags were as white as possible no matter how hard I wiped it. NOT easy to get an old dirty piece of steel that clean. Then gave it a high pressure air bath with clean dry filtered air, and painted it with good quality self etching black paint from the casters to the top edge of the table, leaving the top surface bare and just oiled and wiped clean.
This is the worst it's ever rusted in all these years in these pictures, I take care of it with regular skotch brite scrubbing and cleaning and oiling. In these pictures it had gotten left out but under a canopy for a few weeks before I really overhauled it. I can't find the right after fresh paint and freshining up pictures damit.
The one thing I NEEEED to do, which I WILL be doing in the very near future in bring in into as close to precision flat as possible. This table is being designated for my tube roller base welding fixture table, so it needs to be flatter then it is. It has an ever so slight bow in one direction in it. Maybe about 1/8 in max so no I don't use it for precision welding, I use my jig and fixture table for that.
But I know I can get the bow out of this easily, at least to where I'm satisfied with it's flatness for my tube roller stand base tolerances. I'll be happy if total table flatness is .015 or better across the 4' width. Thats only about .0037 a foot. I'll of course be shooting for much better

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Doing the task of flattening this has been on my radar and I had the table totally empty at one point ready to deal with this issue. Then I needed a surface and that task went to poop and I havent gotten back to it yet. But it's on the list toward the top of it. I had two different vises mounted at one point on it. One broke and is waiting for a part to be copy machined for repair/replacement. Another item on the list a mile long of things to do

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Now I'm going to possibly do the trail hitch reciever tube attachment thing underneath so I can quick pin mount different tools out off the top surface for parts/things requiring hanging to be ground on, on a bench/pedistal grinder, or vise clamped on, in a quick pin removable vise.
I like no sides or flanges underneath the table so long throat clamps will reach the work piece with no interference. It's going to have an adjustable jack screw type center setup to flatten it, and adjust as necessary. Hoping that flattens it enough. Skeptical one on center will do it, but thats the first one I'll try. If it works it's done! Also going to or want to eventually drill & tap some tooling holes possibly. Here she be.
