How far in from the edge should table legs be?

Far enough in for chairs to slide in freely while the top stays fully supported. On our U-leg table the frames are set back from the ends, so chairs fit at the head of the table as well, and the spider base stands in the middle, leaving the long sides completely clear. We set the leg and mounting plate positions to the length, overhang and thickness of your top and confirm them before production. Read the guide to table-base geometry.