Quote:
Originally Posted by efrahjalt
... Ian, Please tell me more about the significance of the central ridge.
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Hi efrahjalt,
A central ridge is created on an initially straight blade, and then the waves (
luk) are forged back and forth along its central axis (reflected by the ridge)—the central ridge thus becomes wavy during the forging process.
This is in contrast to stock removal. Again, one starts with a straight blade and a central ridge, but the waves are ground directly into the edge of the blade. In this case, the central ridge remains straight and the
luk have a pointed appearance.
If a blade is forged from flat stock a central ridge is absent. This is probably the norm for most Moro
kris, but some do have a central ridge.
Many wavy bladed knives and swords made elsewhere in the Philippines often have a central ridge. This is particularly true for those made in northern and central Luzon. Flat bladed, wavy swords are relatively uncommon from Luzon.