Step 3: Prepare the legs
Next, find the center of the end of the post you just measured from. The easiest way to find a center point without doing any real measurements is by drawing an X from each corner. Once you have found the center, drill straight down, as far as you can go, with a 1/4" drill bit.
Repeat on the other four legs
Finally, insert a crossdowel into the 3/8" hole and a bolt into the 1/4" hole. Make sure they line up and that the bolt screws in perpendicularly. Don't worry if its off a couple of degrees. I have developed a theory called "straight enough" which seemed to work out well when building this table.