You'll likely spend the weeks before your move stockpiling various sizes of sturdy boxes and newspaper to wrap fragile items, but you'll need more than that to pack a glass tabletop. Large glass objects are heavy. For example, a 1/2-inch-thick, 48-inch-diameter circular tabletop weighs more than 80 pounds. In addition to being breakable and costly to replace, a large, improperly packed glass item is hazardous to the mover. Pack the tabletop safely and securely so you can reunite it with its base at your destination -- without a trip to the hospital emergency room in between.
Run masking tape strips in different directions across the full length of both sides of the glass tabletop, unless the glass is tempered. Tape helps keep glass shards together if the table breaks; tempered glass breaks in small, relatively harmless pieces, so tape isn't necessary. Masking tape isn't as difficult to remove from glass as stickier tapes, such as packing tape.
Lay a large, thick packing blanket on the floor. Center a piece of corrugated cardboard -- one that's a few inches bigger than the tabletop -- on the blanket. Cut open a box or tape together a few smaller cardboard pieces to make a big enough piece, if necessary.
Place the tabletop on the cardboard. Fold the excess cardboard around the table's edges.
Place a tabletop-sized piece of cardboard over the tabletop. Tape the cardboard pieces together around the edges. For cardboard dimensions, use the table as a template, or measure with a measuring tape.
Fold the blanket around the cardboard-wrapped tabletop. If the blanket doesn't fully cover it, lay another blanket on top. Secure the blanket or blankets around the tabletop with tape.
Wrap the tabletop and blanket with more cardboard in the same fashion as the first layer.