This was one of our biggest tables we have made. It's a giant slab of black walnut: 18ftx4ft and 3" thick after milling it down from 4". So large, we needed three legs to make it structurally sound - not because the slab would bend in the middle without a third leg (it wouldn't), but because the slab is so heavy, it would collapse the two legs at the ends. Simply cutting a giant walnut dining table slab like that out of a log takes a day of cutting (depending on how sharp your bldes are). Kiln drying it takes another 3-4 months. Then we get to start cutting and sanding. Of course you don't have to order an 18ft long table, 6ft or 7ft is fine by us (and our backs!).