an experienced carpenter holds up a large handsaw to examine its cutting edge closely. The saw blade displays a perfect row of triangular sharp teeth pointing in the same direction. Each tooth creates a distinct pointed shape that catches the workshop light. The carpenter runs his finger carefully above the blade to check the sharpness of each individual tooth. His apprentice watches from behind, learning how the tooth pattern makes the saw effective for cutting. Wood shavings on the workbench show evidence of the saw's cutting power. a row of sharp points resembling the teeth of a saw