① The plastic is often used for the 3D printer to produce things. ② The plastic is often used by the 3D printer to produce things. Which of the two sentences is more suitable in gramar and more natura

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① The plastic is often used for the 3D printer to produce things. ② The plastic is often used by the 3D printer to produce things. Which of the two sentences is more suitable in gramar and more natural in English?