When I built my basic welding table I placed 1x1 angle all aground the bottom at th edge to give the 3x8 plates some reinforcement. But It is an absolute BITCH to ground to the table itself. my tweco opens wide would as to my square jaw clamps, but all my other clamps just get fetched up on the edges. I can use more C clamps for securing work pieces so not a huge dial. But I have am massive solid copper contacts ground clamp I believe runs around 40$ and was weighted up to 800 amps and I'm pretty sure it won't fit, albeit with that much clamping force I could clamp the edge onto the angle iron and I bet it would hold there.
But i'm a bit at my wits end here, weld some 1-1/2 square tubing to the side of my table and slide my clamp in there? weld a T piece underneath or a piece to one of my leg? Or do I just pick a few places to grind the 1 inch angle down into nothing so it doesn't get in the way and just accept the loss in support whatever that little may be, Suggests as to the smartest idea?