"We forced the door with a jimmy" is idiomatic whereas "The door was forced by jimmy" (Note there is no article after 'by' in this sentence) is also idiomatic. However, "We forced the door by jimmy" is not. I wonder whether one or the other is idiomatic is based on the passive-active difference. I can't assess whether the following sentences are idiomatic, as I'm a non-native speaker. If you could please help me with this, I'd be very much obliged.
[1-a] We drew lines with a straight edge.
[1-b] Lines were drawn by straight edge.
[2-a] We held the unknown object with the tongs we found in the lab.
[2-b] The unknown object was held by the tongs we found in the lab.
[3-a] We ate the beans with chopsticks.
[3-b] The beans were eaten by chopsticks.
[4-a] We cleaned the room with a broom and a mop.
[4-b] The room was cleaned by broom and mop.
[5-a] We cut the paper with such a peculiar instrument.
[5-b] The paper was cut by such a peculiar instrument.
[6-a] We measured the length of the rope with a ruler.
[6-b] The length of the rope was measured by ruler.