斜切锯

• 余(surplus; I)PHONETIC
• 斗(ladle; measuring vessel)RADICAL

When you scoop rice with a ladle and tilt it sideways, the excess will pour out slanting.

• 七(seven)PHONETIC
• 刀(knife; blade)RADICAL

Using a knife to chop seven times cuts everything apart.

• 釒(metal)RADICAL
• 居(remain; occupy)PHONO-SEMANTIC

A saw is a metal tool fixed in place to cut wood.