Wadding is referring to the act of hanging staff by fastening wads made of plaster of Paris and excelsior or fiber to the casts and winding them around the framing.

An extra warp of filling yarn used in woven fabrics to increase weight, bulk or firmness.Wadding, is also known as yarn wadding .

-see also:
"Wadding" is in the CPC Code "27991"
  Wadding of textile materials and articles thereof; textile fibres not exceeding 5 mm in length (flock), textile dust and mill neps

"Wadding" is in the HS Code "4819"