My packing method for glass is as follows. I put a sufficient amount of bubble wrap inside the glass and several layers of it around the outside, making sure that the excess at the ends is tucked into the inside of the glass and I then tape the packing in place. I then place the glass into a well padded box, but I always leave a little room for movement, because compression will also break the glass, then the box gets taped up. The first box is then placed into a much larger padded box which is also taped and sealed. This method is for a cylinder glass, but I use the same basic method for all types of glasses, shades, globes and chimneys. So far, there has only been one breakage and that was one small globe for a hurricane lamp.