The process of cleaning,Website:http://www.xc-cashmere.com, separating and straightening out the wool fibers is called Wool Carding. It is the last stage in the process which prepares fleece for spinning. Carding is done either manually or with the help of machines. Carding is not applied universally to all fibers, for instance flax is not carded but threshed instead. Wool and cotton are generally carded. Different colors or a mixture of fibers is also possible with carding. Carding can also be used to create mixes of different fibers or different colors. Some drum carders even come with directions on how to best card two colors at once.