How to fix:
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1. If the belts on your 3D printer are loose, this can make the printhead shake more than usual. Make sure to tighten them up and see if that solves the problem.
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2. Putting your 3D printer on a stable base would be a good idea to reduce vibrations and ghosting.
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3. Decreasing the printing speed will also reduce ghosting and make the surfaces of your prints smoother.