Wood          Skin
 |            |
   Drum frame              
 ||-----------|
 ||           | Swivel and bag
 ||           | |
 ||Pedestal   |  
 ||==========|||-<O
 ||           |
 ||           |
 ||           |
 ||-----------|


Put rubber gasket on both sides of the skin between the pedestal and swivel to secure skin to keep from ripping.