The Carding reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Carding

Have you considered sponsoring a child
Carding is the processing of raw or washed wool by brushing it. Hand carders are like dog brushes and are used two at a time, brushing the wool between the two until all the fibers in a bunch are going in the same direction. Machine carding is done with brushes on a drum. Wool is fed into the machine, picked up and brushed onto one or more drums, and then removed.