Measure the table top using a measuring tape to determine how many whole tiles will fit on the table, allowing for a minimum 1/2-inch border around the outer edge.
Route the entire table top with a router fitted with a flat bevel bit.
Spread a minimum 1/4-inch layer of grout on the routed table top.
Press flat tiles into place on the grout, working from one edge to the opposite edge.
Spread enough pre-mixed, quick-dry grout to fill the space between the tiles using the tip of a grout trowel. Filling the space with too much grout will work better than not using enough.
Round the grouted surface using the tip of a grout knife. The grout knife will remove most of the excess grout (if any) and create a slight crescent-shaped groove between the tiles.
Wipe excess grout that might have spread onto the edges of the tile using a damp cotton rag wrapped around the tip of your index finger. Make sure not to rub against the grouted seam.