Model Structure: Perforated dressing eg Mepitel TM sandwiched between two cardboard pieces with window .This is stapled in position and folded centrally and laterally to give an inverted V stable structure. Tape model to worktop to keep secure.
Action: start at one end of this model and pass an 8-0 nylon needle in and out through each perforations in the mepitel. First forehand from one end of the model horizontally to the opposite end, and then back hand.