Table looks good, I like the concept, but not the execution. Probably doesn't look quite as good up close. Also, my guess that the metal was 3/4" solid square stock: That table must weigh a ton. Not sure how he kept the wood from burning or at least scorching with all that welding. Still like the concept, it is cool....
I think he would have a nicer final product if he left the edges rougher and poured pewter or plumbers babbit like the muzzle cap poured below. Much faster and easier. It will contour and hug the wood and if you drill "gates" (little roots) in the wood it will flow in and keep the edge in place.
An added plus is the pour pewter is much lighter and it is flexible and moves with the wood.
In the photo below you can see the little "gates" or sprews where the hot liquid flowed into place.
left somewhat dull but can be polished very bright.
just another approach to embellish the figured walnut.