SALSAG Process Description (Traditional Boie’nen Method):
1. Harvest and Secure: Cut a mature bamboo culm and secure it horizontally on a low wooden bench or stump to prevent rolling.
2. Node Breaking: With a sondang or minasbad (machete or bolo knife), strike circumferentially around each node at ¼–½ inch intervals, rotating the culm to crack the rigid septa without splintering the walls. This step requires steady rhythm to avoid uneven breaks.
3. Lengthwise Split: Insert the knife tip into a weakened node and pry/split the culm open along one side, using the broken nodes as leverage points for a clean separation.
4. Flattening: Gently press and unroll the split culm into a single ply, where the natural fiber connections hold the slats like a tambour or sawali mat. Trim edges if needed.