Case XX Knife Pattern
The Whittler ('83) is a three-bladed Pen configuration with a large blade on one end and two smaller blades on the other. This type of Whittler is often referred to as a Split Back Whittler. The two smaller blades are always the same size and are usually a small Clip and Coping blade, although there is sometimes a Pen blade in the mix. This pattern frequently has two springs with each of the smaller blades bearing on one of the springs while the main blade uses both springs. The most distinctive feature of a Whittler is the master blade which is thicker than normal in the tang area due to the thickness of the two secondary blades. Most whittlers have a center divider (split back) that separates the tangs of the two smaller blades and the two springs for part of their length.