Here’s another example I came across recently. I’ve no reason to doubt this is the original table, and it looks like it has provision for clamping on the side, which is quite a nice feature:
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I’ve always wondered whether those holes carelessly drilled in tables could be filled with weld and cleaned up, but never tried it.
Don't go near it with any hot process, you will likely warp the table top. I learned that lesson the hard way!